What is the yield strength of 4140?
Mechanical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Tensile Strength | 655 MPa | 95,000 PSI |
| Yield Strength | 415 MPa | 60,200 PSI |
| Bulk Modulus | 140 GPa | 20,300 KSI |
| Shear Modulus | 80 GPa | 11,600 KSI |
What does 4140 annealed mean?
4140 Annealed (LPA) Cold Drawn Steel Bar Annealed, cold drawn 4140 steel bar is a medium carbon, chromium-molybdenum steel with high hardenability. It is softened from the mill structure, to a pearlite structure, prior to cold drawing. This improves the ductility and can help improve machinability.
What is HRC of 4140?
4140 is an alloy steel that is supplied in either the annealed or prehardened condition. The prehardened condition is heat treated to a medium hardness (HRC 28/32) and is designated as 4140 HT. 4140 annealed is supplied in the soft condition and can be hardened to RC 54.
What is the hardness of 4140 Prehard?
HRC 28/32
4140 Chromium-Molybdenum Steel 4140 PREHARD is heat treated to a medium hardness (HRC 28/32) and is designated as 4140 HT. 4140 annealed is supplied in the soft condition and can be hardened to RC 40.
What does 4140 mean?
molybdenum steel
4140 Grade Designation
| Number | Meaning |
|---|---|
| 4 | Designates that 4140 steel is molybdenum steel, indicating that it possesses higher amounts of molybdenum than other steels, such as the 1xxx series. |
| 1 | Designates that 4140 steel has additions of chromium as well; more so than 46xx steel for example. |
How do you heat treat 41l40?
For 4140 steel, the recommended heat treatment [1] consists of heating to austenitizing temperature, typically 1570°F (855°C), followed by oil quenching. Tempering (reheating after quenching) will achieve the desired hardness range.
What is the hardness of 4140 PH?
28-32 HRC
Gateway 4140 PH is a prehardened, high -quality alloy steel intended for all mechanical uses where improved machinability, uniform hardness and excellent flatness are required. Product hardness range is 269-321 Brinell (28-32 HRC).
What is the max hardness for 4140?
600 to 650HV
Surface hardness achievable is 600 to 650HV. Atlas 4140 can be surface hardened to 58HRC (typical value).
What is the tensile strength of 4140 Prehard?
153 KSI
4140 HT Oil Quenched & Tempered: Typical Tensile Strength: 153 KSI.