Stainless Steel 304 Round Bar

ASTM A276 Type 304 Rod and SA 479 gr 304 Bar suppliers in UAE

Stainless Steel 304 Round Bar

What is stainless steel 304 round bar?

A SS 304 round bar is an austenitic grade of steel. Stainless Steel 304 Round Bar is designed with a circular cross section. These bars are designed with a primary chemical content of 18% chromium and 8% nickel. The 304 stainless steel round bar has excellent corrosion resistance properties and works well in higher temperature and pressure conditions.

A SS 304 rod has outstanding strength and supports different applications in the system. These bars have excellent forming and welding properties. The grade 1.4301 black bar has superior toughness and works well even in cryogenic temperatures. The bars have good mechanical and physical properties in different conditions. AISI 304 bright bar has an aesthetical outlook and allow ease for cleaning and fabrication services.

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A479 Gr 304 Forged Bar and SA 479 304 Cold Drawn Round Bar as per DIN, JIS, ASTM, UNS, GB, AISI, EN, BS, SAE International specification

  • AISI – American Iron and Steel Institute
  • ASTM – American Society for Testing and Materials
  • DIN – Deutsches Institut für Normung
  • BS – British Standards
  • ANSI – American National Standards Institute
  • JIS – Japanese Industrial Standards
  • AFNOR – Association Française de Normalisation
  • AS – Standards Australia
  • ASME – American Society of Mechanical Engineers
  • EN – European standard
  • SAE – Society of Automotive Engineers
  • GB – Guojia Biaozhun (Chinese national standards)

Stainless steel 304 round bar specification

Specifications Stainless Steel 304 (UNS S30400), ASTM A276 Type 304
Hollow Bar From 32mm O.D x 16mm I.D to 250mm O.D x 200mm I.D
Channel Bar From 5.0 to 6.0mm thickness, 40 x 80 mm to 75 x 150mm section
Angle bar size 20mm*3mm*20mm~100mm*12mm*100mm
Billet Size From 1/2 to 495mm Dia.
Rectangular Bars Section From 3.0 to 12.0mm thickness
Rectangles standard sizes 30 x 33 mm to 1066 x 295 mm
Tolerance ±1% H8 to K12
Dimensions ASME, EN, DIN, BS, JIS, ASTM, AISI
Condition Hardened, Tempered and Annealed
Standard ASTM A276, ASTM A479, AMS, ASTM A582, ASTM A484, GB4226, GB/T1220
Round Bar Size Bar Diameter between 3-~800mm
Technique Hot Rolled, Cold Rolled, Cold Drawn, Rod, and SS 304 Forged Round Bar
Processing Bar cutting up to 650mm
SS 304 bar stock Heat treated/ Non heat treated
Surface type Black, polishing, peeled, bright drawn, hair line or sand blast
Delivery approx timeline 7-15 days, please get in touch directly with the top 10 listed ss 304 round bar suppliers for exact shipment time
Application Fasteners, machine parts
Packing Plywood box, export packing as required
Value Added services Drlling, cutting, polishing, colour, bending, welding or punching
Grade 304 hot rolled bar
  • Inox 304 Flat Bar – BS EN 10058
  • SUS 304 Square Bar – BS EN 10059
  • SS 304 Round Bar – BS EN 10060
  • AISI 304 Hex Bar – BS EN 10061

What certifications are required for this A276 grade 304 bar material?

  • EN 10204/3.1B,
  • Raw Materials Certificate
  • 100% Radiography Test Report
  • Third Party Inspection Report

SA 479 tp 304 Rounds and SS 304 Round Bar in 2B Peeled and polished condition

Different types of SS 304 round bar

SA 479 Gr 304 Bar

SA 479 Gr 304 Bar

A479 Gr 304 Forged Bar

A479 Gr 304 Forged Bar

AISI 304 bright bar

AISI 304 bright bar

SS 304 Round Bar

SS 304 Round Bar

SUS 304 peeled round bars

SUS 304 peeled round bars

DIN 1.4301 Round Bar

DIN 1.4301 Round Bar

SA 479 tp 304 Rounds

SA 479 tp 304 Rounds

ASTM A276 UNS S30400 Bar

ASTM A276 UNS S30400 Bar

AMS 5639 Bar

AMS 5639 Bar

ASTM A479 Type 304 Polished Bar

ASTM A479 Type 304 Polished Bar

SA 276 304 Rectangular Bar

SA 276 304 Rectangular Bar

SA 479 304 Cold Drawn Round Bar

SA 479 304 Cold Drawn Round Bar

AISI 304 Round Bar

AISI 304 Round Bar

SUS 304 Rod

SUS 304 Rod

SS 304 Black Bar

SS 304 Black Bar

304 Stainless Steel Cold Rolled Bar

304 Stainless Steel Cold Rolled Bar

ASTM A276 Type 304 Hot Rolled Bar

ASTM A276 Type 304 Hot Rolled Bar

ASTM A276 Type 304 annealed bar

ASTM A276 Type 304 annealed bar

Buy AMS 5639 Bar and SA 276 304 Rectangular Bar at affordable prices from verified and audited 304 Stainless Steel Round Bar suppliers in UAE as per ASTM A276 UNS S30400 specification

304 stainless steel round bar price

Dia Price
USD/ Kg
Price
AED/ Kg
3MM US $3.03 AED 11.14
4MM – 22MM US $2.79 AED 10.25
25MM – 80MM US $2.57 AED 9.45
85MM – 100MM US $2.73 AED 10.03

SS 304 round bar chemical composition

Elements Min Max
Chromium: 18.00 % 20.00 %
Nickel: 8.00% 10.50 %
Carbon: 0.08 %
Phosphorus: 0.040 %
Silicon: 1.00 %
Sulfur: 0.030 %
Manganese: 2.00 %
Molybdenum: 0.75 %
Compare price of 1.4301 AISI 304 round bar stockists in Dubai, check ASTM A479 Type 304 polished bar & SS 304 Black Bar tolerances and sizes

304 stainless steel round bar tolerances

Alloy(s) Diameter Tol. (over(+)/under(-)) Spec. Diameter, in.
Any Hot Rolled Bar  +/- 0.009″ Over 0.875 to 1, incl
 +/- 0.010″ Over 1 to 1.125, incl
 +/- 0.011″ Over 1.125 to 1.25, incl
 +/- 0.012″ 1.25 to 1.375, incl
 +/- 0.014″ Over 1.375 to 1.5, incl
 + 1/64″ Over 1.5 to 2, incl
 + 3/64″ Over 2.5 to 3.5, incl
 + 0.0625″ Over 3.5 to 4.5, incl
 + 5/64″ Over 4.5 to 5.5, incl
 + 0.125″ Over 5.5 to 6.5, incl
 + 5/32″ Over 6.5 to 8, incl
 + 0.1875″ Over 8 to 12, incl
 + 7/32″ Over 12 to 15, incl

 

Alloy(s) Diameter Tol. (over(+)/under(-)) Spec. Diameter, in.
Any Cold Finish Bar  +/- 0.001″ 0.0625 to 0.3125, excl
 +/- 0.0015″ 0.3125 to 0.500, excl
 +/- 0.002″ 0.500 to 1, excl
 +/- 0.0025″ 1 to 1.5, excl
 +/- 0.003″ 1.5 to 3.25, incl
 +/- 0.005″ 3.25 to 4, incl

SS 304 round bar mechanical properties

Mechanical Properties can be different in various conditions such as Annealed at Zero and Sub-Zero Temperatures, Elevated Temperatures, At Room Temperature or ASTM A276-98b 304, check the properties of different temperature and conditions

Mechanical Property of SS 304 round bars – Annealed to ASTM A276-98b 304

Finish Cold finished Cold finished Hot finished
Thickness/ Diameter (mm) Up to & incl
12.7 mm
Over 12.7mm All
Temsile Strength Min. 620 Mpa 515 Mpa 515 Mpa
Yield Strength Min. 310 Mpa 205 Mpa 205 Mpa
Elongation in 50mm % 30 Min 30 Min 40 Min

Typical Mechanical Properties of SUS 304 forged bar At Room Temperature – Annealed

Finish Cold Drawn Other
Tensile Strength 680 Mpa 590 Mpa
Yield Strength 500 Mpa 240 Mpa
Elongation in 50mm % 42 55
Charpy V-notch 190 183
Hardness 195 HB 155 HB
13 Rc

Typical Mechanical Properties of 304 stainless steel bars – Annealed at Elevated Temperatures

Temperature 20 °C 430 °C 550 °C 650 °C 760 °C 870 °C
Tensile Testing Tensile Strength 580 Mpa 425 Mpa 370 Mpa 310 Mpa 205 Mpa 140 Mpa
Yield Strength 240 Mpa 150 Mpa 130 Mpa 115 Mpa 95 Mpa 70 Mpa
Elongation in 50mm % 60 40 35 32 33 40
Creep Test & Behavior Stress for % Creep in
10,000 hours
115Mpa 50Mpa 15Mpa

Typical Mechanical Properties of stainless steel 304 bar stock – Annealed at Zero and Sub-Zero Temperatures

Temperature °C 0 °C -70 °C -130 °C -180 °C -240 °C
Tensile Strength 870 Mpa 1000 Mpa 1300 Mpa 1400 Mpa 1650 Mpa
Yield Strength 260 Mpa 300 Mpa 350 Mpa 375 Mpa 450 Mpa
Elongation in 50mm % 57 50 45 40 30
Impact Creep Test & Behavior 190 190 185 180 180

Grade 304 round bar equivalent

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

DIN 1.4301 bright bar testing requirement

Following is the list of testing methods required for quality check of ss 304 bright bars

  • Surface inspection
  • Positive Material Identification (PMI)
  • 100% dimensional & tolerances verification
  • AISI 304 bright round bars Upset Testing
  • Step-down tests
  • Non metallic inclusion rating – also known as NMIR
  • Microstructure Analysis of SS 304 rod
  • Radioactivity & Ultrasonic Testing – UT

Stainless steel 304 round bar weight chart

Dia Weight Dia Weight
(cm) per metre (ton) (mm) per metre (ton)
482803.2 0.00006 1/8″ 0.00006
643737.6 0.0001 3/16″ 0.00014
804672 0.00016 1/4″ 0.00025
965606.4 0.00022 5/16″ 0.00039
1126541 0.0003 3/8″ 0.00056
1287475 0.0004 7/16″ 0.00077
1609344 0.00062 1/2″ 0.001
1931213 0.00089 9/16″ 0.00122
2253082 0.00122 5/8″ 0.00156
2414016 0.0014 11/16″ 0.00189
2574950 0.00159 3/4″ 0.00225
2896819 0.00201 7/8″ 0.00307
3218688 0.00248 1″ 0.00403
3540557 0.003
3862426 0.00357
4023360 0.00388

SS 304 Rod HSN Code

HSN Code ProductDescription
722100 Bars/ rods hot-rolled stainless steel:
7221 Bars/ rods, hot-rolled, stainless steel
72210090 Other

UNS S30400 bars finishes

Finishes of 304 stainless steel bar and rod

  • Polished
  • Black
  • Bright Drawn
  • Dull polished finish
  • Mill Finish
  • CNC machined
  • Peeled
  • Cold Drawn
  • Turned
  • Centreless Ground

304 stainless steel bar stock sizes

Length Size Wght
(mm)
144.00″ 1/8″ 0.0042
144.00″ 5/32″ 0.0065
144.00″ 3/16″ 0.009
144.00″ 1/4″ 0.0167
144.00″ 5/16″ 0.0261
144.00″ 3/8″ 0.0375
144.00″ 7/16″ 0.0511
144.00″ 1/2″ 0.0668
144.00″ 9/16″ 0.0845
144.00″ 5/8″ 0.104
144.00″ 11/16″ 0.126
144.00″ 3/4″ 0.151
144.00″ 7/8″ 0.204
144.00″ 15/16″ 0.2349
144.00″ 1″ 0.267
144.00″ 1-1/8″ 0.338
144.00″ 1-3/16″ 0.377
144.00″ 1-1/4″ 0.417
144.00″ 1-3/8″ 0.5049
144.00″ 1-7/16″ 0.5583

How to weld a SS 304 rod?

  • 308 welding electrodes are most suitable for welding
  • No post heat or pre heat

SS 304 Round Bars International standards

  • Australia : AS 2837-1986-304
  • Germany : Werkstoff / W.Nr 1.4301, X5CrNi 18 10
  • Great Britain : EN58E, BS970 Part3 1991, 304S15/304S31 BS970 1955
  • Japan : SUS 304, JIS G4303
  • USA (United States) : ASTM A276 98b 304, UNS S30400, AISI 304, SAE 30304

Different forms of stainless steel 304 bar stock

  • Inox 1.4301 Round bars
  • Stainless steel 304 Rod
  • 304 stainless steel T-Bars
  • SA 479 gr 304 Channel Bars
  • SS 304 Precision Ground Bars
  • ASTM A276 gr 304 Triangle bars
  • SA 479 tp 304 Flat Bars
  • A479 Gr 304 Square bars
  • ASTM A276 Type 304 Blocks
  • SA 479 304 Round Rod
  • ASTM A479 Type 304 Rings
  • SA 276 304 Hollow bars
  • AISI 304 Rectangle bars
  • ASTM A276 304 Rectangular bars
  • SUS 304 Hex (A/F) bars
  • DIN 1.4301 Threaded bars
  • SS 304 Half Round Bars (limited manufacturers produce this form)
  • Werkstoff 1.4301 Profiles
  • SA 479 gr 304 Billet
  • ASTM A276 UNS S30400 Ingot
  • SS 304 I/H Bars
  • A479 Gr 304 Forging

SS 304 round bar application

  • To manufacture fasteners (bolts/ nuts/ threaded rods)
  • Shipbuilding
  • Automotive sector
  • Defense
  • Textile
  • Paper and pulp industry
  • Heavy industrial equipment
  • Construction
  • Machineries

EN European Standard for SS 304 forged bars

EN10058 SS 304 Flat Bars Hot Rolled
EN10059 Inox 1.4301 Square Bars Hot Rolled
EN10060 Type 304 Round Bars Hot Rolled
EN10061 UNS S30400 Hexagonal Bars Hot Rolled
EN10278 DIN 1.4301 Bright Bars (Ground, Drawn or Turned) Hot Rolled

SS 304 peeled round bar tolerance

Diameter Tolerance
10 ~ 25φ +0.15/-0
25 ~ 80φ +0.25/-0
80 ~ 125φ +0.50/-0
125 ~ 150φ +1.00/-0
150 ~ 400φ +2.00/-0

304 stainless steel round bar tolerance chart

Sizes (in mm) General purposes Sizes (in mm) Precision purposes
10 – 15mm +/- 0.4 10 – 12mm +/- 0.15
16 – 25mm +/- 0.5 13 – 22mm +/- 0.20
26 – 35mm +/- 0.6 24 – 30mm +/- 0.25
36 – 50mm +/- 0.8 32 – 40mm +/- 0.30
52 – 80mm +/- 1.0 42 – 52mm +/- 0.40
85 – 100mm +/- 1.3 55 – 75mm +/- 0.50
105 – 120mm +/- 1.5
125 – 160mm +/- 2.0
165 – 200mm +/- 2.5
220mm +/- 3.0
250mm +/- 4.0

Surface finish of 304 stainless steel bars and rods

  • Cold drawn
  • Centreless ground
  • Bright drawn
  • Smooth turned
  • Cold finished
  • Peeled and turned
  • Slit rolled edge
  • Polished
  • Hot rolled annealed and pickled
  • Hot finished
  • Peeled and reeled
  • Rough turned or peeled

What are Annealed, Hot-Finished and cold-drawn in SA 479 gr 304 material?

Annealed, Hot-Finished and cold-drawn

A SA 479 gr 304 Bars is usually processed in annealed, hot finished and cold drawn conditions. The robust ASTM A276 Type 304 hot rolled bar is manufactured at high temperatures till it reaches its recrystallization limit. These bars have slightly rounded edges with small distortions. During the annealing process, the AMS 5639 Bar is heated at specific temperatures and later cooled. Annealing helps in softening the metal and improving its ductility while reducing its brittleness.

The 304 Stainless Steel Cold Rolled Bar is processed soon after the hot rolling process at room temperature. These bars have an excellent surface finish and have close tolerances. The SA 479 304 Cold Drawn Round Bar has better strength and enhanced corrosion resistance properties compared to the other two. The ASTM A479 Type 304 Polished Bar is a product of the cold forming process and has a shiny surface finish.

Difference between ASTM A276 Type 304 condition a and condition b

The ASTM A276 Type 304 is available in either condition a or condition b. ASTM A276 Type 304 condition a is an annealed metal that is highly resistant to corrosion in harsh environments. This SA 479 gr 304 Bar condition a grade is very ductile and is common in the automotive, marine, oil, aerospace, and petrochemical industry. The condition b SA 479 tp 304 Rounds is also annealed and is more stronger and ductile than condition a. This is accomplished via the cold working process. An SS 304 Black Bar is common in heavyweight fasteners, carabiners, linkage devices, the automotive industry, etc.

Why 304 Stainless Steel Round Bar is a popular grade? Read more about application and advantages

The SS 304 grade is the most common grade used in producing a stainless steel round bar. The ASTM A276 UNS S30400 grade has excellent chemical content, giving it outstanding resistance to corrosive and reducing affluents. The round bars of this grade have excellent toughness in elevated as well as low temperatures.

The austenitic SUS 304 rod has outstanding welding qualities and the raw materials required to manufacture the grade are readily available. This makes it a popular grade in the industry. The SA 276 304 Rectangular Bars is commonly seen in a variety of home and commercial applications. These bars are used in the food, domestic tools, and architectural industry. The A479 Gr 304 Forged Bars is also seen in chemical containers, heat exchangers, mining systems, etc.