JFE445M
Ni-free high corrosion-resistance 22Cr 1Mo stainless steel
<Composition> 22Cr - 1Mo - Nb - ultra-low (C, N) (equiv. to SUS445J1)
comparison of corrosion resistance
Weldability
Corrosion resistance
- Higher chromium content of 22% and addition of 1% molybdenum for exellent corrosion resistance equivalent to SUS316 and SUS444.
- No risk of stress corrosion cracking.
- Totally free of nickel, so cost is not impacted by the price fluctuations of nickel.
- Designed to be eco-friendly and economical, by limiting the quantity of added molybdenum compared to SUS316 and SUS444.
Applications
Hot water heater body, water storage tanks, solar water heaters, hot water dispensers, roofing materials, architectural exteriors, heat exchangers, food equipment
Chemical composition
| Type | Standards | Chemical composition (%) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| JFE Standards | JIS Standards | Correspoding EN Standard | ASTM AISI equivalent |
C | Si | Mn | P | S | Cr | Mo | Other | |
| Weldability Corrosion resistance |
JFE445M | SUS445J1 | ≤0.025 | ≤1.00 | ≤1.00 | ≤0.040 | ≤0.030 | 21.00 - 24.00 | 0.70 - 1.50 | N ≤ 0.025 Nb 8× (C＋N) - 0.80 |
||
Mechanical properties
| Type | Standards | Mechanical properties | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| JFE Standards | JIS Standards | Correspoding EN Standard | ASTM AISI equivalent |
Tensile test | Hardness test | Bend test | |||||
| Yield strength N/mm² |
Tensile strength N/mm² |
Elongation (%) | Hv | HRB | Bending angle | Inside radius t : thickness |
|||||
| Weldability Corrosion resistance |
JFE445M | SUS445J1 | ≥ 245 | ≥ 410 | ≥ 20 | ≤ 230 | ≥ 96 | 180° | 1.0×t | ||
Physical properties
| Steel grade | Density | Electric Resistance | Magnetism | Specific heat | Thermal conductivity | Thermal expansion coefficient | Young’s modulus | ||
|---|---|---|---|---|---|---|---|---|---|
| 0 - 100℃ | 100℃ | 500℃ | 20 - 100℃ | 20 - 650℃ | ×10³ | ||||
| g/cm³ | 10-6Ω・cm | (Annealed material) | J/kg・℃ (cal /g・℃) |
W /m・℃ (10-2cal /cm・sec・℃) |
10-6/℃ | N/mm² | |||
| JFE445M | 7.67 | 62 | Yes | 470 (0.11) |
20.4 (4.87) |
24.9 (5.95) |
10.1 | 12.2 | 211 |
<<Note>> Density in the table above is the actually measured value as a physical property.
In mass calculations for commercial transactions, JIS G 4310 “Method of Mass Calculation for Stainless Steel Plates and Sheets, and Heat-Resisting Steel Plates and Sheets” will apply.
In mass calculations for commercial transactions, JIS G 4310 “Method of Mass Calculation for Stainless Steel Plates and Sheets, and Heat-Resisting Steel Plates and Sheets” will apply.