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ASTM A276 AISI 304 Stainless Steel Round Bar Suppliers

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ASTM A276 SS 304 Bars, 304 Stainless Steel Bar, SS 304 Round Bar, Stainless Steel Bars, Stainless Steel UNS S30400 Forged Bar, 304 Black Bars, Stainless Steel Round Bar, Stainless Steel 304 Rectangle Bar Exporter, Stainless Steel 304 Bar Suppliers in Mumbai, India.

DETAILED INFORMATION

Triroundbars.com is a PED approved manufacturer of Stainless steel Bright Bars, Mild steel Bright Bars & alloy steel bright bars and many other Stainless Steel Materials & Grades. Our manufacturing punit is in compliance with the international quality standards which makes us in top 10 stainless steel bright bar exporters in INDIA

Triroundbars.com can produce AISI 304 Grades Steel Round Bar, Hex Bar, Forged Bar, Hollow Bar, Square Bar catering to segments ranging from industrial fasteners manufacturers to pharmaceuticals manufacturers to other advanced applications with emphasis on 200 series (low nickel).

Stainless 304 Round Bar Definition are Recognized as the Prominent Manufacturer, Exporter and Supplier of a broad assortment of Stainless Steel 304 Round Bar. The offered SS 304 Round Bar is designed with utmost precision in conformity with the international quality standards.

Steel bars can be categorically said to be one of the core components of any manufacturing industry or for that matter any industry that relies on machinery. It can be used in automotive, textile, fabrication, construction, cement, ship building, paper and pulp, defence, heavy earth moving equipment, or aerospace.

ASTM A479 refers specifically to ASME SA479 grade 304 round bars used in boilers and pressure vessels, whereas ASTM A276 refers specifically to ASME SA276 grade 304 rod for reforging as well as free machining. Astm a276 type 304 round bar is available in various conditions, such as A, H, B, S, and T.

In each condition, the requirement for furnishing is different, for instance Condition A indicates that the bar has been annealed, Condition H indicates that the bar has been hardened and tempered at a relative temperature, Condition T, on the other hand, indicates that the bar has been hardened and tempered at a relatively high temperature, Condition S indicates that the bar has been strain hardened or relatively lightly cold worked, and Condition B indicates that the bar has been relatively severely cold worked. Heat treatment and corrosion testing are applied to ASTM A479 type 304 bars.

Stainless 304 Round Bar Definition Triroundbars.com, are Recognized as the Prominent Manufacturer, Exporter and Supplier of a broad assortment of Stainless Steel 304 Round Bar. The offered SS 304 Round Bar is designed with utmost precision in conformity with the international quality standards.

304 Stainless Steel Round Bar can be categorically said that steel bars are one of the core components of any manufacturing industry or for that matter any industry that relies on machinery. versatile applications in automotive, textile, fabrication, construction, cement, ship building, paper and pulp, defence, heavy earth moving equipment or aerospace.

Grade 304 Stainless Steel is the standard “18/8” stainless; it is the most versatile and most widely used stainless steel, available in a wider range of products, forms and finishes than any other. It has excellent forming and welding characteristics. The balanced austenitic structure of Grade 304 enables it to be severely deep drawn without intermediate annealing, which has made this grade dominant in the manufacture of drawn stainless parts such as sinks, hollow-waASTM A276 AISI 304 Stainless Steel Round Bars has impressive forming and welding properties, which can be conducted with or without the filler methods. Welding may require post-annealing treatment. Three hundred four stainless steel round bars are resistant to corrosion, and they perform well in many atmospheric environments. These bars are highly resistant to chloride and other chemical reactions which occur due to the reaction of oxidation and corrosion. 

AISI 304 Stainless Steel Round Bars provide sporadic service at a temperature range of 870°C-925°C. These grades are made with 8% of nickel and 18% of chromium composition, making them more substantial than other alloys. These bars are available in different sizes and types, such as square, rectangle, hex, flat, etc. The dimensions of these bars differ from 1-6 metres. The tensile strength of these bars is Psi 75000, and the yield strength is Psi 30000re and saucepans. For these applications it is common to use special “304 DDQ” (Deep Drawing Quality) variants.

SS UNS S30400 Round Bar,304 Stainless Steel Round bar,SS 304 Round Bar Suppliers,304 Stainless Steel Round Bar Manufacturers in India, JIS SUS 304 Flat Bar Exporter, SS 304 Square Bar, 304 SS Bar Leading Manufacturer,SS 304 DIN 1.4301 Bar & Rod, Stainless Steel 304 Black Round Bar, SS 304 Polish Bar, SS 304 Flat Bar Manufacturers & Suppliers in India

 

ASTM A276 round bars are one of the best quality and highly demanding bars in all industries. These bars are enriched with excellent properties, which make them a superior grade for factory applications. 

304 Stainless Steel Bar Corrosion Resistance

304 has excellent corrosion resistance in many  environments and when in contact with different corrosive media. Pitting and crevice corrosion can occur in environments containing chlorides. Stress corrosion cracking can occur above 60°C.

304 Stainless Steel Bar Heat Resistance

304 has good resistance to oxidation in intermittent service up to 870°C and in continuous service to 925°C. However, continuous use at 425-860°C is not recommended if corrosion resistance in water is required. In this instance 304L is recommended due to its resistance to carbide precipitation.

Where high strength is required at temperatures above 500°C and up to 800°C, grade 304H is recommended. This material will retain aqueous corrosion resistance

304 Stainless Steel Bar Fabrication

Fabrication of all stainless steels should be done only with tools dedicated to stainless steel materials. Tooling and work surfaces must be thoroughly cleaned before use. These precautions are necessary to avoid cross contamination of stainless steel by easily corroded metals that may discolour the surface of the fabricated product.

304 Stainless Steel Bar Cold Working

304 stainless steel readily hardens. Fabrication methods involving cold working may require an intermediate annealing stage to alleviate work hardening and avoid tearing or cracking. At the completion of fabrication a full annealing operation should be employed to reduce internal stresses and optimise corrosion resistance.

304 Stainless Steel Bar Hot Working

Fabrication methods, like forging, that involve hot working should occur after uniform heating to 1149-1260°C. The fabricated components should then be rapidly cooled to ensure maximum corrosion resistance.

304 Stainless Steel Bar Machinability

304 has good machinability. Machining can be enhanced by using the following rules:

Cutting edges must be kept sharp. Dull edges cause excess work hardening.

Cuts should be light but deep enough to prevent work hardening by riding on the surface of the material.

Chip breakers should be employed to assist in ensuring swarf remains clear of the work

Low thermal conductivity of austenitic alloys results in heat concentrating at the cutting edges. This means coolants and lubricants are necessary and must be used in large quantities.

304 Stainless Steel Bar Heat Treatment

304 stainless steel cannot be hardened by heat treatment.

Solution treatment or annealing can be done by rapid cooling after heating to 1010-1120°C.

304 Stainless Steel Bar Weldability

Fusion welding performance for type 304 stainless steel is excellent both with and without fillers. Recommended filler rods and electrodes for stainless steel 304 is grade 308 stainless steel. For 304L the recommended filler is 308L. Heavy welded sections may require post-weld annealing. This step is not required for 304L. Grade 321 may be used if post-weld heat treatment is not possible.

Why use 304 Stainless Steel Bar

  • Austenitic stainless steels are extensively used for service down to as low as liquid helium temperature (-269 deg C). This is largely due to the lack of a clearly defined transition from ductile to brittle fracture in impact toughness testing.
  • Various types of stainless steel are used across the whole temperature range from ambient to 1100 deg C.
  • The ferritic types may be limited, in practice, to lower temperatures as they have lower strengths at elevated temperatures than the austenitic types. The ferritic types can also suffer from embrittlement with extended exposure to temperatures above about 450°C.

304 Stainless Steel Bar Useful Information

You can also read about:

  • Steel bar Comparative / similar specifications
  • Steel bar Standards and specifications by country
  • Steel bar Standards and specifications by company

1.4301 Bar and Section

Stainless steel types 1.4301 and 1.4307 are also known as grades 304 and 304L respectively. Type 304 is the most versatile and widely used stainless steel. It is still sometimes referred to by its old name 18/8 which is derived from the nominal composition of type 304 being 18% chromium and 8% nickel.

Type 304 stainless steel is an austenitic grade that can be severely deep drawn. This property has resulted in 304 being the dominant grade used in applications like sinks and saucepans.

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Specification of ASTM A276 AISI 304 Stainless Steel Round Bar

STANDARD BS UNS JIS EN DIN WERKSTOFF NR. GOST AFNOR
SS 304 304S31 S30400 SUS 304 X5CrNi18-10 1.4301 1.4301 08Х18Н10 Z7CN18‐09

 

Standards ASTM, ASME
Designation A 276, SA 276
Grade Stainless steel 304 Round Bars
Range

Inox 304 Round Bars

FORM: Rod, Solid Round

ASTM: ASTM A276-10 (Standard Specification for Stainless Steel Bars and Shapes)

Alloy: 304

Characteristics: Semi-smooth, dull grey finish. Accurate dimensions throughout length.

Workability: Good candidate for some processing techniques. Great corrosion resistance.

Applications: Designed for close tolerance. Shafts, Hinges, Dowels

Stainless Steel Bar Specifications

ASTM A276 This specification encompasses cold-finished or hot-finished bars, including rounds, squares, and hexagons, and hot-rolled or extruded shapes, such as angles, tees, and channels in the more commonly used types of stainless steels.
ASTM A479 This specification includes cold and hot finished stainless steel bars, including rounds, squares, and hexagons, and hot-rolled or extruded shapes such as angles, tees, and channels.
ASTM A484 This specification includes wrought stainless steel bars, shapes, forgings, and billets or other semi-finished materials, except wire, for forging. The materials are available in four types of conditions.
ASTM A582 This specification includes cold or hot finished bars, which are suitable for machining processes. This specification includes rounds, squares, and hexagons, from common types of stainless free-machining steels.
ASTM B473 This specification includes nickel alloy bar & wire, which can be produced in a solution-annealed condition, stabilised-annealed condition, or annealed condition.

ASTM A276 AISI 304 Stainless Steel Round Bar Chemical Composition

Grade C Mn Si P S Cr Mo Ni N
SS 304 0.08 max 2 max 0.75 max 0.040 max 0.030 max 18 – 20 8 – 11

304 Stainless Steel Round, Bright, Hex, Threaded Bar Chemical Composition

The chemical composition of grade Stainless Steel 304 Round Bar is outlined in the following table

  C Mn Si P S Cr Ni N
304 0.07max 2.0max 0.75max 0.045max 0.03max min: 18.0 max: 20.0 min: 8.0 max: 10.5 —
304L 0.03max 2.0max 0.75max 0.045max 0.03max min: 18.0 max: 20.0 min: 8.0 max: 12.0 0.10 max
304H min: 18.0 max:20.0 min: 8.0 max: 10.5 min: 0.04 max:0.10 0.75 max 2.0 max 0.045 max 0.03 max 0.10 max

ASTM A276 AISI 304 Stainless Steel Round Bar Mechanical & Physical Properties

Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
8.0 g/cm3 1400 °C (2550 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %

ASTM A276 AISI 304 Stainless Steel Round Bar Condition

H&T Hardened and tempered.
ANN Annealed
PH Precipitation hardened.

 

ASTM A276 AISI 304 Stainless Steel Round Bar Sizes

Type SIZES (mm) SIZES (Inches) ISO Tolerance
Cold Drawn and Polish 3.00 – 75.00 1/8 – 3.00 h8-h9-h10-h11
Cold Drawn and Ground 10.00 – 75.00 5/6 – 2.50 h8-h9-h10-h11
Peeled and Polished 40.00 – 150.00 1.50 – 6.00 h11, h11-DIN 1013
Peeled and Ground 20.00 – 50.00 3/4 – 2.00 h9-h10-h11

 

Different designations & equivalent steel number of ASTM A182 F1: ASTM A213 T1, A335 P1, A182 F1, A387Gr.1

European EU EN: 16Mo3

USA AISI / ASTM: A204Gr.A, A204Gr.B

Germany DIN,WNr: 1.5415, 15Mo3, 16Mo3

Japan JIS: STBA12

France AFNOR: 15D3

England BS: 1503-243B, 240, 243

Italy UNI: 15Mo3, 16Mo3

Spain UNE: 16Mo3

Sweden SS: 2912

Poland PN: 16M

Czechia CSN: 15020

Austria ONORM: 15Mo3KW

Inter ISO: F26, P26, TS26

Forging Specification: A182 F1

Common Designation: C-1/2 Mo Low Alloy Steel

Casting Grade: ASTM A217 Grade WC1

WROUGHT BAR SPECIFICATION: A182 F1 Class 1

 

Other Equivalent Alloy Steel Round Bar & Flat Bar

Material Group Common Name Type UNS Forging Spec. Casting Spec. Equivalent DIN DIN W. No Application
Low Alloy Steel Moly Steel C-1/2Mo K12822 A182-F1 cl2 A217-WC1 15M03 1.5415 Up to 470ºC* (875ºF)
Alloy Steel Chrome Moly 1.1/4Cr-1/2Mo K11572 A182-F11 cl2 A217-WC6 13CRM044 1.7335 Up to 593ºC (1100ºF)
2.1/4Cr-1Mo K21590 A182-F22 cl3 A217-WC9 10CRM0910 1.7380 Up to 593ºC (1100ºF), HP steam
5Cr-1/2Mo K41545 A182-F5/F5a A217-C5 12CRMO195 1.7362 High temp refinery service
9Cr-1Mo K90941 A182-F9 A217-C12 X 12 CrMo 9 1 1.7386 High temp erosive refinery service
9Cr-1Mo-V   A182-F91 A217-C12A X 10 CrMoVNb 9 1 1.4903 High pressure steam

ASTM A276 AISI 304 Stainless Steel Round Bar Equivalent Grades

STANDARD

WERKSTOFF NR.

UNS

JIS

BS

GOST

AFNOR

EN

SS 304

1.4301

S30400

SUS 304

304S31

08Х18Н10

Z7CN18‐09

X5CrNi18-10

Bar – Up to 160mm Dia / Thickness

Mechanical Property

Value

Proof Stress

190 Min MPa

Tensile Strength

500 to 700 MPa

Elongation A50 mm

45 Min %

Hardness Brinell

215 Max HB

304 Stainless Steel Bar Alloy Designations

Stainless Steel Grade 1.4301/304 also corresponds to the following designations but may not be a direct equivalent:

S30400

304S15

304S16

304S31

EN58E

ASTM A276 AISI 304 Stainless Steel Round Bar Equivalent Grades

STANDARD UNS WERKSTOFF NR. AFNOR EN JIS BS GOST
SS 304 S30400 1.4301 Z7CN18‐09 X5CrNi18-10 SUS 304 304S31 08Х18Н10

ASTM A276 AISI 304 Stainless Steel Round Bar Tolerances

Surface Finish Cond.
H 6 H 12 H 7 H 9 H 10 H 8 H 11
Turned Round Round Round Round
Polished Round Round Round Round Round Round Round
Drawn Round, Square, Hexagon Round Round Round, Square, Hexagon
Ground Round Round Round Round Round Round Round

 

Stainless Steel 304 Round Bar Range

SS 304 Round Bar Specification

ASTM A276 / ASTM A479 /ASTM A182 / ASME SA276 / ASME SA479 / ASME SA182

SS 304 Round Bar Manufacturing Process

Hot Rolled / Cold Rolled / Hot Forging / Rolling / Machining

SS 304 Round Bar Other Grades

202 / 304 / 304L / 304H / 309S / 310S / 316 / 316L / 316Ti / 317L / 321 / 321H / 347 / 347H / 904L etc.

UNS No. – UNS S30400, UNS S30403, UNS S31008, UNS S31620, UNS S31603, UNS S31603, UNS S31635, UNS S31703, UNS S32100, UNS S34700, UNS S34709, UNS S8904

DIN / EN No. – 1.4301, 1.4307, 1.4845, 1.4401, 1.4404, 1.4571, 1.4438, 1.4541, 1.4550, 1.4551, 1.4539

AFNOR: Z2 CN 18.10, Z 6 CND 17-11, Z 2 CND 17-12,Z3 CrNi 22.05 AZ

EURONORM: FeMi35Cr20Cu4Mo2, FeMi35Cr20Cu4Mo2, X1CrNiMo17 12 2, X3CrNiMo17 12 2, FeMi35Cr20Cu4Mo2, X2CrNiMoN 22.5.3

SS 304 Round Bar Dimension

Round Bars : Outside Diameter in the range of 4mm to 500mm

Bright Bars : Outside Diameter in the range of 4mm to 200mm

Hex Bars : 18mm to 57mm (11/16″ to 2-3/4″)

Square Bars : 18mm to 57mm (11/16″ to 2-3/4″)

Flat Bars : 1/2″to 10″in thickness range of 2 mm to 150mm, Custom Size Stainless Steel Flats available

SS 304 Round Bar Length

2 metres to 7.5 metres ( 8 feet to 24 feet), or Custom Length as per Requirement

SS 304 Round Bar Forms and Shape

Round, Square, Hex (A/F), Rectangle, Billet, Ingot, HRAP, Bright, Shaft, Forging Etc.

SS 304 Round Bar Finish

Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish

SS 304 Round Bar Dimension Standard

ASTM A 484 / ISO h11 / ISO K12 Tolerances F8 / h8, h9, h10, h11, h12, k12, k13, A-484, EN-10060, DIN-1013 etc.

SS 304 Round Bar Heat Treatment

Condition A in which the bars are Annealed

Condition H in which the bars are Hardened and Tempered at a relative Temperature

Condition T in which the bars are Hardened and Tempered at a relatively High Temperature

Condition S in which the bars are Strain Hardened or relatively Light Cold Worked

Condition B in which the bars are Relatively severe Cold work.

Solution Annealed, Ageing and Double Ageing

SS 304 Round Bar Surface Finish

Centreless Ground & Belt Polished, up to Ra value = 0.2 um (12 RMS), and Grit Polished of up to 180 to 600

SS 304 Round Bar Chamfering

Available in 30°, 45° & 60° through fully automatic, both-end chamfering machine

SS 304 Round Bar Other Testing

NACE MR0175, IGC TEST, Intergranular Corrosion Test as per ASTM A262 Practice E, Charpy Impact Test, Macro, Grain Size, Hardness, Magnetic Particle Inspection (MPI), 100% tested thru Digital Ultrasonic Flaw Detector, as per ASTM A-388, EN 10308 (class 1to4),API 6A/ISO 10423:2003-PSL3,SEP 1920:1984 ( class A,B,C), MIL STD 2154 etc.

SS 304 Round Bar Value Added Services

Rolling, Drill, Punch, CNC Machining, Sand Blasting, Shot Blasting, Heat Treatment, Anti-rust Paint, Polishing

SS 304 Round Bar Packaging

Loose / Carat / Wooden Pallet / Wooden Box / Plastic Cloth Wraps

S304 Round Bar Shipment & Transportation

By Road – Truck / Train Partial Load, Full Load, By Sea – Break-bulk Conventional Vessel / FCL (Full Container Load) / LCL (Less Container Load) / 20 Feet Container / 40 Feet Container / 45 Feet Container / High Cube Container / Open Top Container, By Air – Freighter Civil Passenger and Cargo Planes

SS 304 Round Bar Material Test Certificate

Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS, Bureau of Indian Standards BIS Approved ETC

SS 304 Round Bar Documentation

Commercial Invoice which includes HS Code / Packing List including net weight and gross weight, number of boxes, Marks and Numbers / Certificate of Origin legalised/attested by Chamber of Commerce or Embassy / Fumigation Certificates / Raw Material Test Reports / Material Traceability Records / Quality Assurance Plan (QAP) / Heat Treatment Charts / Test Certificates certifying NACE MR0103, NACE MR0175 / Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2 / Guarantee Letter / NABL approved Laboratory Test Reports / Welding Procedure Specification/Procedure Qualification Record, WPS/PQR / Form A for the purposes of the Generalised System of Preferences (GSP)

 

Types of ASTM A276 AISI 304 Stainless Steel Round Bars

  • ASTM A314 303 stainless steel round bars

  • ASTM A276 304 stainless steel round bars

  • ASTM A276 304L stainless steel round bars

  • ASTM A276 304H stainless steel round bars

  • ASTM A276 316 stainless steel round bars

  • ASTM A276 316L stainless steel round bars

  • ASTM A276 316H stainless steel round bars

  • ASTM A276 316Ti stainless steel round bars

  • ASTM A276 321 stainless steel round bars

  • ASTM A276 321H stainless steel round bars

  • ASTM A276 329 stainless steel round bars

  • ASTM A276 347 stainless steel round bars

  • ASTM A276 347H stainless steel round bars

  • ASTM A276 310 stainless steel round bars

  • ASTM A276 310S stainless steel round bars

  • ASTM A276 317 stainless steel round bars

  • ASTM A276 317L stainless steel round bars

  • ASTM A276 314 stainless steel round bars

  • ASTM A276 410 stainless steel round bars

  • ASTM A582 416 stainless steel round bars

  • ASTM A276 420 stainless steel round bars

  • ASTM A276 430 stainless steel round bars

  • ASTM A276 430F stainless steel round bars

  • ASTM A276 431 stainless steel round bars

  • ASTM A276 440C stainless steel round bars

  • ASTM A276 446 stainless steel round bars

  • ASTM A276 422 stainless steel round bars

  • ASTM B649 904L stainless steel round bars

  • 17-4 PH stainless steel round bars

  • 15-5 PH stainless steel round bars

  • 13-8 PH stainless steel round bars

  • Alloy A286 stainless steel round bars

  • Alloy 660 stainless steel round bars

  • Nitronic 50 stainless steel round bars

  • Nitronic 60 stainless steel round bars

  • ASTM A479 stainless steel round bars

 

Types of Round Bars

Black Bars, Bar, Bright Bar, Square Bar, Hex Bar, Rods

Applications Industry ASTM A276 AISI 304 Stainless Steel Round Bar

•   Thermal pipe plants

•   Pharmaceutical industry

•   Oil Refineries

•   Textile Industries

•   Nuclear plants

•   Chemical Industries

•   Dairy Products

•   Power Plant

•   Food Products

•   Petrochemicals industry

•   Sugar industry

•   Engineering industry

•   Chemical industry

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