| Standard: | AISI, ASTM, DIN, JIS |
|---|---|
| Special Use: | High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Free Cutting Steel, Mold Steel |
| Transport Package: | Customization |
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Alloy Steel 4145H/ 120 Ksiasper API Standard/1045/Flat Bar/Steel Block/Round Bar
Ningshing Precision Machinery began in 1992. We devote oneself to providing One-Stop Solutions to our customers on Tool Steel, Die Steel, Alloy Steel, Mold Base, Machining Parts, CNC Machine.
4145H 120 KSIasper API standard
AISI 4145H 120 KSI Alloy Steel Bar for Drilling Collar, Drill Pipe, Square Kelly, Lifting Sub, Stabilizer
Dimensions
Hot Rolled Round:dia.50-130 mm.
Forged Round: dia.100-1300 mm.
Delivery Condition
EAF+LF+VD, Hot Rolled or Forged, Machined, Q+T, UT 100% Passed.
Chemical Composition(%)
| C | Si | Mn | P | S | Cr | Mo | Ni | Cu |
| 0.42-0.49 | 0.15-0.35 | 0.80-1.15 | ≤ 0.020 | ≤ 0.025 | 0.75-1.20 | 0.15-0.45 | ≤ 0.25 | ≤ 0.30 |
Mechanical Properties
| Tensile Strength PSI (MPa) | Yield Strength PSI (MPa) | Elongation | Reduction of Area | Hardness | |
| Min. | 140000 | 120000 | 14% | 45% | 30 HRC (285 HB) |
| Max. | ------ | ------ | ------ | ------ | 36 HRC (341 HB) |
Characteristics
AISI / SAE 4145H grade is a low-alloy steel containing chromium and molybdenum as strengthening agents. The steel has good fatigue strength and impact toughness in low temperature, weldability and machinability.
Applications
This low-alloy steel is used in heat treated condition with 120 KSI minimum yield strength for oil and gas equipments of well drilling, wellhead, Christmas tree, etc.
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