Audited Supplier
4130 75K P+X
Alloy Steel Bar
AISI
Forged
Bar
SHUNFU
Strip
4-60MM
China
Product Description
AISI 4130 75K P+X Alloy Steel
Introduce
AISI 4130 75K, PSL 3, API 6A Standards, Temperature Class P+X, NACE MR0175:2015Chemical Composition
| Grade | C | Mn | Cr | Mo | Si | P | S | Ni | Cu | V | H max. ppm |
| Min. | 0.280 | 0.400 | 0.800 | 0.150 | 0.150 | - | - | - | - | - | - |
| Max. | 0.330 | 0.600 | 1.100 | 0.250 | 0.350 | 0.025 | 0.025 | 0.350 | 0.350 | 0.300 | 2.000 |
Heat Treatment
| Normalizing temperature | Time | Austenizing temperature | Time | Tempering temperature | Time |
| Min. 1620ºF (899ºC) | Min. 60 minutes | 1575 - 1625ºF (857 - 885ºC) | Min. 60 minutes | Min. 1238ºF (670ºC) | Min. 60 minutes |
Mechanical Properties
as per ASTM E21-20 for P+X Grade| Yield strength minimum (0.2%) | Tensile strength minimum | Elongation in 2" (minimum) | Reduction Area (minimum) |
| 75 ksi (517MPa) | 95 ksi (655 MPa) | 18% | 35% |
Quality Inspection
- Specimen test location & QTC
- Charpy V-notch impact at 21ºC / -32ºC
- Hardness as per ASTM E10-18: On surface / 1" below surface
- Volumetric NDE 100% - Ultrasonic
- Minimum hot work reduction ratio 4.0 to 1
- Grain size should be #S or Finer as per ASTM E112 - 13
- Surface inspection
