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16MnCr2NiMoV is a low-carbon Ni-Cr-Mo-V alloy carburizing steel, engineered for high-load gears, shafts, and heavy-duty mechanical components. It is designed to produce a hard, wear-resistant surface while retaining a tough, ductile core, ensuring reliability under cyclic stress.
The alloying system provides:
Chromium (Cr): enhances hardenability and wear resistance
Manganese (Mn): improves core toughness and strength
Nickel (Ni): increases impact resistance and fatigue life
Molybdenum (Mo): improves core strength and reduces temper brittleness
Vanadium (V): refines grains and enhances fatigue resistance
Compared with standard carburizing steels such as 20CrMnTi, 16MnCr2NiMoV offers:
Deeper carburized case depth
Superior fatigue resistance
Improved performance for large-diameter gears and shafts
It is widely used in automotive, wind power, mining, and industrial transmission systems.
Chemical Composition (wt%)
| Element | Content (%) |
|---|---|
| C | 0.14 – 0.20 |
| Si | 0.17 – 0.37 |
| Mn | 0.80 – 1.20 |
| Cr | 0.80 – 1.10 |
| Ni | 0.80 – 1.10 |
| Mo | 0.15 – 0.30 |
| V | 0.05 – 0.12 |
| P | ≤ 0.025 |
| S | ≤ 0.025 |
Specifications & Dimensions
| Product Type | Size Range | Length | Standard |
|---|---|---|---|
| Round Bar | 20 – 500 mm (0.79" – 19.7") | 3 – 12 m | GB/T 3077 |
| Forged Bar | 80 – 1000 mm (3.15" – 39.4") | Custom | GB |
| Steel Plate | 10 – 200 mm (0.39" – 7.87") | Custom | GB |
| Gear Forgings | As per drawings | Custom | EN / ASTM |
Tolerance: ASTM A29 / EN 10060
Surface Condition: Black / Peeled / Turned / Polished
Mechanical Properties (After Carburizing & Q&T)
| Property | Value |
|---|
| Surface Hardness | 58 – 62 HRC |
| Core Tensile Strength | ≥ 900 MPa |
| Core Yield Strength | ≥ 700 MPa |
| Elongation | ≥ 10% |
| Impact Energy | ≥ 55 J |
Heat Treatment Process
Carburizing: 900 – 940°C
Quenching: Oil quenching
Tempering: 150 – 200°C
Heat Treatment Benefits:
Deep and uniform hardened layer
Tough and ductile core
High fatigue life
Superior wear resistance
Key Features & Advantages
1. Excellent Carburizing Capability
Achieves uniform and deep case depth, ideal for heavy gears and large shafts.
2. High Toughness Core
Nickel and vanadium improve impact resistance and crack prevention.
3. Superior Fatigue Strength
Designed for cyclic loading and high-speed transmission applications.
4. Good Wear Resistance
Carburized surface provides long service life under friction and heavy loads.
5. Stable Heat Treatment Performance
Uniform mechanical properties even in thick sections.
Applications
16MnCr2NiMoV alloy steel is widely used in:
Automotive transmission gears
Heavy-duty industrial gear shafts
Wind turbine gearboxes
Mining machinery components
Power transmission systems
Comparison with Similar Grades
| Grade | Carburizing Depth | Toughness | Application |
|---|---|---|---|
| 16MnCr2NiMoV | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | Heavy-duty gears & shafts |
| 20CrMnTi | ⭐⭐⭐ | ⭐⭐⭐ | General gears |
| 18CrNiMo7-6 | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐ | High-end gear systems |
Inspection & Quality Assurance
We implement strict quality control:
Chemical composition analysis
Mechanical testing (tensile, impact, hardness)
Case depth inspection after carburizing
Ultrasonic Testing (UT)
Metallographic examination
✅ Third-party inspection: SGS / BV / TUV
✅ Certification: EN 10204 3.1 / 3.2
Product Delivery Standards
Delivery Condition: Annealed / Normalized / Pre-machined
Packaging: Seaworthy export packing
Delivery Time: 10–25 days
Custom forging & machining services available
Why Choose Our 16MnCr2NiMoV Steel?
Advanced refining technology for uniform composition
Deep carburization and high fatigue resistance
Large gear forging capability
Global export experience
Technical support for transmission component design
FAQ – Frequently Asked Questions
Q1: What is 16MnCr2NiMoV steel used for?
It is mainly used for heavy-duty gears, shafts, and transmission components.
Q2: What is the hardness after carburizing?
Surface hardness reaches 58–62 HRC with a tough core.
Q3: Is it better than 20CrMnTi?
Yes, it has better fatigue resistance, deeper case depth, and higher toughness.
Q4: Can you supply gear forgings?
Yes, we provide custom gear blanks and forged shafts.
Q5: Do you provide inspection certificates?
Yes, we provide EN 10204 3.1 / 3.2 certification.
Contact Us
Looking for a reliable 16MnCr2NiMoV alloy steel supplier?
We offer:
Custom gear forgings
Competitive pricing
Fast global delivery
+8615769214734
office@dongmjd.com
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