AISI 4145H material is a chromium molybdenum low alloy tempered steel. It has improved hardenability and is more is commonly used in the high strength condition with min.110 KSI yield.
Mechanical Properties of AISI 4145H bar
| |
Yield strength
rp0.2
mpa |
Tensile strength
rm
mpa |
Elongation
[%] |
Hardness
[hb] |
Impact
Charpy-V, -20ºC
[J] |
| 100 KSI, MIN. |
689 |
896 |
20 |
233 |
- |
| MAX. |
- |
1000 |
- |
- |
- |
| 110 KSI, MIN. |
758 |
965 |
14,5 |
285 |
≥ 27 |
| MAX. |
- |
1068 |
- |
341 |
- |
Chemical composition:
| Element % |
C |
SI |
MN |
CR |
MO |
S |
P |
| MIN. |
0.43 |
0.15 |
0.75 |
0.80 |
0.15 |
|
|
| MAX. |
0.48 |
0.35 |
1.00 |
1.10 |
0.35 |
0.025 |
0.025 |
Applications:AISI 4145H low alloy steel is suitable for downhole drilling tools such as subs, x-overs, drill collars, pup-joints and fishing tools. General engineering applications include components exposed to heavy strain, such as shafts, gear, bolts etc. AISI 4145H alloy steel scan also be used in hardened condition as machine parts exposed to heavy wear.
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