25Cr2MoVA
Alloy Steel25Cr2MoVA
(GB/T 3077). Nominal values—confirm mill certificate.
Chemical Composition (%)
| C | 0.22 |
|---|---|
| SI | 0.17 |
| MN | 0.4 |
| CR | 1.5 |
| MO | 0.25 |
| V | 0.15 |
| P | 0.03 |
| S | 0.03 |
Mechanical Properties
Tensile:≥930 MPa;Yield:≥785 MPa;Elong:≥14%;RA:≥50%
Chinese Standard
T 3077 25Cr2MoVA
Available Forms
Bar,Plate
Uses
Low-alloy engineering steel with enhanced hardenability and strength from alloying elements. Chromium (≈1.65%) improves hardenability, wear and corrosion resistance. Molybdenum (≈0.3%) raises high-temperature strength and prevents temper embrittlement. Vanadium (≈0.225%) refines grain and strengthens the tempered structure. Applied to gears, shafts, bolts, connecting rods, pressure parts and heavy forgings in automotive, energy and machinery sectors.
Heat Treatment
Austenitize at 820–870 °C (oil or water quench depending on section) and temper at 400–650 °C to the required strength/toughness balance.
Precautions
Weldable with standard procedures; preheat may be needed for thick sections or higher-carbon/ alloy grades. Protect from decarburization during heating (controlled atmosphere or protective coating).
Comments 0