|
Grade |
C |
Mn |
P≤ |
S≤ |
Si |
Cr |
Mo |
|
1020 |
0.18-0.23 |
0.30-0.60 |
0.04 |
0.05 |
- |
- |
- |
|
1025 |
0.22-0.28 |
0.30-0.60 |
0.04 |
0.05 |
- |
- |
- |
|
4130 |
0.28-0.33 |
0.40-0.60 |
0.04 |
0.05 |
0.15-0.35 |
0.80-1.10 |
0.15-0.25 |
|
4140 |
0.38-0.43 |
0.75-1.00 |
0.04 |
0.05 |
0.15-0.35 |
0.80-1.10 |
0.15-0.25 |
|
Grade |
Condition |
MPa Tenslle Point |
Yield Point |
Elongation |
|
1020 |
CW |
≥414 |
≥483 |
≥5% |
|
|
SR |
≥345 |
≥448 |
≥10% |
|
|
A |
≥193 |
≥331 |
≥30% |
|
|
N |
≥234 |
≥379 |
≥22% |
|
1025 |
CW |
≥448 |
≥517 |
≥5% |
|
|
SR |
≥379 |
≥483 |
≥8% |
|
|
A |
≥207 |
≥365 |
≥25% |
|
|
N |
≥248 |
≥379 |
≥22% |
|
4130 |
SR |
≥586 |
≥724 |
≥10% |
|
|
A |
≥379 |
≥517 |
≥30% |
|
|
N |
≥414 |
≥621 |
≥20% |
|
4140 |
SR |
≥689 |
≥855 |
≥10% |
|
|
A |
≥414 |
≥552 |
≥25% |
|
|
N |
≥621 |
≥855 |
≥20% |
|
Wall % of OD |
Wall Tolerances Max % Over and Under Nominal Wall |
|
|
ID up to 1.499" |
ID 1.500" and larger |
|
|
Under 25% |
+/- 10.0% |
+/- 7.50% |
|
Over 25% |
+/- 12.5% |
+/- 10.0% |
|
Wall Thickness Tolerance (ASTM A519 HRS Alloy) |
|||
|
Wall Thickness Range as a Percent of Outside Diameter |
% Over and Under Nominal Wall |
||
|
OD up to 2.999" |
OD 3.00"- 5.999" |
OD 6.00"- 10.750" |
|
|
Walls Under 15% of nominal O.D. |
12.50% |
10.00% |
10.00% |
|
Walls Over 15% of nominal O.D. |
10.00% |
7.50% |
10.00% |
|
Outside Diameter Size Range |
Wall percent of Outside Diameter |
Total Camber in any 3 ft. |
|
Up to 5.000" |
3% OD & Over |
0.030" |
|
5.001 / 8.000" |
4% OD & Over |
0.045" |
|
8.001 / 10.750" |
4% OD & Over |
0.060" |
