High-strength low alloy steel with superior hardenability and CVN impact toughness. Engineered for critical downhole applications and high-stress industrial environments.
Better depth of hardening than AISI 4140
Superior CVN impact values at high strength levels
Widely used in drilling jars and downhole tools
150 KSI+ achievable with proper heat treatment
| Element | Min | Max | Typical |
|---|---|---|---|
| Carbon(C) | 0.38 | 0.43 | ~0.40 |
| Silicon(Si) | 0.15 | 0.35 | ~0.25 |
| Manganese(Mn) | 0.60 | 0.90 | ~0.75 |
| Phosphorus(P) | - | 0.035 | - |
| Sulfur(S) | - | 0.040 | - |
| Chromium(Cr) | 1.65 | 1.95 | ~1.80 |
| Molybdenum(Mo) | 0.20 | 0.30 | ~0.25 |
| Nickel(Ni) | 1.65 | 2.00 | ~1.80 |
| Iron(Fe) | Balance | Balance | Balance |
Heat Treated Condition (Minimum Values)
Available Strength Levels
| Level | Tensile Strength | Yield Strength | Application |
|---|---|---|---|
| Standard | 150 KSI | 130 KSI | General purpose |
| High Strength | 165 KSI | 145 KSI | Critical applications |
| Ultra High | 180 KSI | 160 KSI | Specialized downhole |
Superior depth of hardening due to higher nickel content
Better CVN impact values at equivalent strength levels
Achieves 150 KSI+ with proper heat treatment
Better strength-to-weight ratio and durability
Lower alloy content alternative
Higher alloy content for extreme performance
Modified composition for specific applications
Leverage our extensive heat treatment experience and technical expertise for your high-strength low alloy steel requirements.