440C 9Cr18MoV High Carbon Stainless Steel Round Bar 16-18% Chromium 0.95-1.20% Carbon for Knife Blades
Premium hot-rolled stainless steel round bar specifically engineered for high-performance knife manufacturing and cutting tool applications.
440C stainless steel is renowned for its exceptional combination of properties:
- High hardness capability up to 60 HRC after heat treatment
- Superior corrosion resistance in atmosphere, fresh water, and mild acids
- Excellent wear resistance and mechanical strength
- Capable of achieving razor-sharp edges with smooth polished surfaces
Primary Applications: High-quality knife blades, surgical instruments, cutting tools, ball bearings, valve components, chisels, and industrial cutting equipment.
| Element | Minimum (%) | Maximum (%) |
|---|---|---|
| Carbon | 0.95 | 1.20 |
| Manganese | - | 1.00 |
| Silicon | - | 1.00 |
| Chromium | 16.00 | 18.00 |
| Molybdenum | - | 0.75 |
| Phosphorus | - | 0.040 |
| Sulphur | - | 0.030 |
| Iron | Balance | |
| Property | Value |
|---|---|
| Density | 7650 kg/m³ |
| Elastic Modulus | 200 GPa |
| Thermal Conductivity (100°C) | 24.2 W/m·K |
| Specific Heat (0-100°C) | 460 J/kg·K |
| Electrical Resistivity | 600 nΩ·m |
Annealing: 850-900°C, slow furnace cool to 600°C then air cool
Hardening: 1010-1065°C followed by oil or air quenching
Tempering: 150-370°C for optimal hardness and mechanical properties
Note: Avoid tempering between 425-565°C due to reduced impact and corrosion resistance.
- USA: ASTM A276-98b 440C, SAE 51440C, AISI 440C, UNS S44004
- Germany: W.Nr 1.4125 X105CrMo17
- Japan: JIS G4303 SuS 440C
- Australia: AS 2837-1986 440C
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.