1. Standard
ASTM Standard:ASTM B7292. Chemical Composition
Elements | C | Mn | P | S | Si | Cr | Mo | Ni | Cu | Nb+Ta | Fe |
Min | 19.0 | 2.0 | 32.0 | 3.00 | 8C | ||||||
Max | 0.07 | 2.00 | 0.045 | 0.035 | 1.00 | 21.0 | 3.0 | 38.0 | 4.00 | 1.0 | remainder |
Actual value | 0.05 | 0.47 | 0.011 | 0.0013 | 0.20 | 20.13 | 2.41 | 33.02 | 3.77 | 0.68 | 38.74 |
3. Mechanical Properties
Mechanical Properties |
Tensile Strength MPa |
Yield Strength MPa |
Elongation % |
Min | 550 | 240 | 30 |
Max | |||
Actual value | 685 | 397 | 35 |
4. Typical Size
Size |
Outside Diameter mm |
Permissible Variations in Outside Diameter mm |
Wall mm |
Average Wall Permissible Variations in Wall Thickness |
60.3×3.91 | 60.3 | ±0.25 | 3.91 | ±10%S |
Note:Standard requirements control range:OD:±0.25mm,WT:±10%S