Stainless Steel Bar Specs Grade 304

Product Data Sheets – Stainless Steel

Grades 304 & 316

  1. Stainless steel bar supplied by Austral Wright Metals complies with ASTM A276, Standard Specification for Stainless Steel Bars and Shapes, with most dimensions meeting ASTM A484, Standard Specification for General Requirements for Stainless Steel Bars, Billets and Forgings. Diameters are to ISO 683/13 Heat-treated Steels, Alloy Steels and Free-cutting Steels – Part XIII: Wrought Stainless Steels.
  2. Test Certificates showing compliance with ASTM A276 are available for all material supplied.
  3. The requirements of AS2837-1986 Wrought Alloy Steels – Stainless Steel Bars and Semi-Finished Products are compared to those of ASTM A276 and ISO 683/13 in the following tables.
  4. All stainless steel bar supplied by Austral Wright Metals meets the requirements of AS2837-1986.

Table 1: Chemical Requirements

C Mn P S Si Cr Ni Mo N
304 ASTM A276 0.08 2.00 0.045 0.030 1.00 18.00-20.00 8.00-10.50 0.10
AS2837 0.08 2.00 0.045 0.030 1.00 18.00-20.00 8.00-10.50
316 ASTM A276 0.08 2.00 0.045 0.030 1.00 16.00-18.00 10.00-14.00 2.00-3.00 0.10
AS2837 0.08 2.00 0.045 0.030 1.00 16.00-18.00 10.00-14.00 2.00-3.00

Table 2: Mechanical Properties of Annealed Cold Finished Bar

Grades 304 & 316

Diameter
Yield Strength
Tensile Strength
Elongation
Reduction of Area
Hardness
(min)
(min)
(min)
(min)
(max)
mm
MPa
MPa
%
%
HB
ASTM A276 < = 12.7 310 620 30 40
> 12.7 205 515 30 40
AS2837 all 205 520 40 183

Table 3: ASTM A484 Tolerances on Diameter of COld Finished Round Bars

Specified Size
Over
Under
mm
1.50 to 7.99 0.03 0.03
8.00 to 12.99 0.04 0.04
13.00 to 24.99 0.05 0.05
25.00 to37.99 0.06 0.06
38.00 to 100.00 0.08 0.08

Table 4: ISO687/13 Tolerances on Diameter of Round Bars (mm)

Diameter h9 h11

Austral Wright Metals supply cold finished bar to h9 diameter tolerance up to 50.8 mm. Larger diameters are peeled to h11.

ISO h tolerances are plus zero, minus the value in the table.

mm
< 3.00 0.025 0.040
3.0 – 5.99 0.030 0.048
6.0 – 9.9 0.036 0.048
10.0 – 17.9 0.043 0.070
18.0 – 29.9 0.052 0.084
30.00 – 49.9 0.062 0.100
50.0 – 79.9 0.074 0.120
80.0 – 99.9 0.087 0.140
100.0 – 180.0 0.100 0.250

Table 5: AS2837 Tolerances on Diameter of Annealed Cold Finished Round Bars

Specified Diameter
Tolerance – plus nil, minus
Over
Up to and including
25 0.08
25 50 0.10
50 70 0.13

Table 6: ASTM A484 Tolerances

on Straightness of Machine Straightened Cold Finished Round Bars

Over 12.7mm diameter

Tolerance 1 Tolerance 2
1.5mm in any 1.5m But may not exceed 1.5 x length in meters divided by 1.50

Table 7: AS2837 Tolerances on Straightness of Cold Sized Bars

Specified Size
Straightness Tolerance
(max) mm
All 1 in 500

 

The technical advice and recommendations made in this Product Data Sheet should not be relied or acted upon without conducting your own further investigations, including corrosion exposure tests where needed. Please consult current editions of standards for design properties. Austral Wright Metals assumes no liability in connection with the information in this Product Data Sheet. Austral Wright Metals supplies a comprehensive range of stainless steels, copper alloys, nickel alloys and other high performance metals for challenging service conditions. Our engineers and metallurgists will be pleased to provide further data and applications advice.

 

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