ASTM A653 |
|
Quality |
Chemical Composition , Max % |
Yield Strength min, Ksi |
Tensile Strength min, Psi |
Elongation in 2" min, % |
||||||
|
C |
Min |
P |
S |
Cu |
||||||
|
Commercial Quality (A526) |
0.15 |
0.60 |
0.04 |
0.040 |
0.20 |
|
- |
--- |
||
|
Lock Forming Quality( A527) |
0.15 |
0.60 |
0.04 |
0.040 |
0.20 |
|
- |
--- |
||
|
Drawing Quality (A528) |
0.1 |
0.50 |
0.03 |
0.035 |
|
- |
- |
--- |
||
|
Drawing Quality Special Killed (A642) |
0.1 |
0.50 |
0.03 |
0.035 |
|
- |
- |
--- |
||
|
Structural Quality (A 446) |
Grade 33(A) |
0.20 |
- |
0.40 |
0.04 |
0.20 |
33 |
45 |
20 |
|
|
Grade 37 (B) |
0.20 |
- |
0.10 |
0.04 |
0.20 |
37 |
52 |
18 |
||
|
Grade 40 ( c) |
0.25 |
- |
0.10 |
0.04 |
0.20 |
40 |
55 |
16 |
||
|
Grade 50 |
Class 1(D) |
0.40 |
- |
0.20 |
0.04 |
0.20 |
50 |
65 |
12 |
|
|
Class2 (D) |
0.40 |
- |
0.20 |
0.04 |
0.20 |
50 |
- |
12 |
||
|
Class 3 (F) |
0.50 |
- |
0.04 |
0.04 |
0.20 |
50 |
70 |
12 |
||
|
Grade 80 (E) |
0.20 |
- |
0.04 |
0.04 |
0.20 |
80 |
82 |
- |
||
|
High Strength low-alloy (A816) |
Grade 50 |
Type I |
0.20 |
1.20 |
-- |
0.035 |
0.20 |
50 |
60 |
20 |
|
Type II |
0.15 |
1.20 |
-- |
0.035 |
0.20 |
50 |
60 |
22 |
||
|
Grade 60 |
Type I |
0.20 |
1.35 |
-- |
0.035 |
0.20 |
60 |
70 |
16 |
|
|
Type II |
0.15 |
1.20 |
-- |
0.035 |
0.20 |
60 |
70 |
18 |
||
|
Grade 70 |
Type I |
0.20 |
1.65 |
-- |
0.035 |
0.20 |
70 |
80 |
12 |
|
|
Type II |
0.15 |
1.65 |
-- |
0.035 |
0.20 |
70 |
80 |
14 |
||
|
Grade 80 |
Type I |
0.20 |
1.65 |
-- |
0.035 |
0.20 |
80 |
90 |
10 |
|
|
Type II |
0.15 |
1.65 |
-- |
0.035 |
0.20 |
80 |
90 |
12 |
||
Thickness Tolerance ASTM A924 (3/8 inch minimum edge distance) |
| Unit: Inch. Plus and minus for specified thickness (including base metal and coating) | ||||||
| Width/Thickness | through 0.023 | Over 0.023 through 0.043 | Over 0.043 through 0.061 | Over 0.061 through 0.075 | Over 0.075 through 0.101 | over 0.101 through 0.187 |
| To 32 incl. | 0.003 | 0.004 | 0.005 | 0.006 | 0.007 | 0.008 |
| Over 32 to 40 incl. | 0.003 | 0.004 | 0.005 | 0.006 | 0.008 | 0.008 |
| Over 40 to 60 incl. | 0.003 | 0.004 | 0.005 | 0.006 | 0.008 | 0.009 |
| Over 60 72 incl. | - | 0.004 | 0.005 | 0.006 | 0.009 | 0.009 |
Width Tolerances ASTM A924 |
|
Unit: Inch. Tolerance over specified width. No minus tolerance |
||
| Width | Tolerance | |
| Over 12 through 30 | 1/8 | |
| Over 30 through 48 | 3/16 | |
| Over 48 through 60 | 1/4 | |
| Over 60 through 72 | 5/16 | |
Length Tolerances ASTM A924 |
|
| Unit: Inch. Tolerance over specified length. No minus tolerance. | |
| Length | Tolerance |
| Over 12 through 30 | 1/8 |
| Over 30 through 60 | 1/4 |
| Over 60 through 96 | 1/2 |
| Over 96 through 120 | 3/4 |
| Over 120 through 156 | 1 |
| Over 156 through 192 | 1 1/4 |
| Over 192 through 240 | 1 1/2 |
| Over 240 | 1 3/4 |