Alloy Steel 34 Crnimo6
Alloy Steel 34CrNiMo6
Alloy Steel 34CrNiMo6 is a nickel-chromium-molybdenum high-tensile alloy steel widely recognized for its exceptional strength, toughness, and fatigue resistance. This steel grade offers excellent hardenability and mechanical properties under quenched and tempered conditions, making it ideal for heavy-duty shafts, gears, bolts, and structural components subjected to high stress and impact. Its versatility and reliability make it a preferred choice in automotive, aerospace, oil & gas, and power generation industries.
With a balanced chemical composition of nickel, chromium, and molybdenum, Apar Alloys is a Supplier and Stockist of 34CrNiMo6, ensuring consistent material quality and performance for precision applications. The grade provides superior toughness, wear resistance, and shock load capability, maintaining excellent strength even at low temperatures. It exhibits good machinability in the annealed condition and responds well to heat treatment, allowing for deep hardening and high surface strength. These properties make it ideal for critical engineering and mechanical components that demand reliability and long service life.
Specifications
| Grade | AISI | UNS | ASTM A276 / A479 | ASTM A182 | EN (W-Nr) | DIN Spec |
|---|---|---|---|---|---|---|
| 34CrNiMo6 | 4340 | G43406 | ASTM A276 / A479 | ASTM A182 | 1.6582 | 34CrNiMo6 |
General Characteristics
Nickel-Chromium-Molybdenum high-tensile alloy steel
Excellent combination of strength, toughness, and fatigue resistance
Superior hardenability and impact strength
Performs well after quenching and tempering
Good machinability and dimensional stability
Suitable for dynamic and heavy-load industrial applications
Chemical Composition (nominal) %
| Element | C | Si | Mn | P | S | Cr | Ni | Mo | Fe |
|---|---|---|---|---|---|---|---|---|---|
| 34CrNiMo6 | 0.33–0.38 | 0.10–0.40 | 0.50–0.80 | ≤0.025 | ≤0.035 | 1.30–1.70 | 1.30–1.70 | 0.15–0.30 | Balance |
Applications
Ideal for shafts, axles, gears, and crankshafts in heavy machinery
Used in automotive and aerospace components requiring high fatigue strength
Suitable for bolts, fasteners, and connecting rods under cyclic load
Commonly employed in powertrain systems and pressure vessels
Preferred for oilfield and offshore mechanical parts
Applied in machine tools and general engineering equipment
Advantages
- High tensile and yield strength with excellent ductility
- Superior impact and fatigue resistance under high loads
- Excellent hardenability and wear resistance after heat treatment
- Maintains dimensional accuracy and stability in service
- Long service life with low maintenance requirements
- Consistent performance in high-stress, dynamic conditions
Mechanical Properties (Typical at Room Temperature)
| Property | Value |
|---|---|
| Tensile Strength (MPa) | 850 – 1000 |
| Yield Strength (MPa) | 680 – 850 |
| Elongation (%) | 13 – 16 |
| Hardness (Brinell) | 250 – 320 HB |
Why Choose Apar Alloys
At Apar Alloys, we combine technical expertise with a client-focused approach, ensuring materials meet international quality standards and project-specific requirements.
Trusted Stockist & Supplier
Ready inventory for quick and reliable dispatch
Sourced from Reputed International Mills
Consistent quality and traceable certifications
Comprehensive Quality Assurance
Every batch undergoes detailed testing and inspection
Custom Sizes, Finishes & Services
Tailored solutions for unique industrial needs
Competitive Pricing & Reliable Delivery
Value-driven materials with prompt logistics
Dedicated Client Support
Personalized service and long-term business relationships
Get in Touch
Contact Us
Looking for a dependable source for Alloy Steel 34CrNiMo6 materials? Contact Apar Alloys today for detailed specifications, quotations, or custom supply solutions for Alloy Steel Round Bars and Engineering Components.
[Call] +91 98333 89128
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