DIN 17440 Grade X4CrMoS18 soft annealed (+A)
DIN 17440 Grade X4CrMoS18 soft annealed (+A) introduction
Properties:
- stainless free cutting steel
- application in quenched and tempered state
- corrosion resistance is similar to an 13%-Cr-steel, because of its sulfur additional
- application temperature: -25 to 550 °C
Application:
- for application enviroment like water, steam, weak alkaline and neutral media
- for screws, nuts, fittings, axis, bolts, spindles
- for magnetic valve
Equivalent material: ASTM 430FR, DIN X6CrMoS17, DIN 1.4105, DIN X 4 CrMoS 18, AFNOR Z8CF17, UNE F.3114, AISI 430F, SAE 430F, JIS SUS430F, EN X6CrMoS17, EN 1.4105, ISO X6CrMoS17, ASTM 430F, UNS S43020
DIN 17440 Grade X4CrMoS18 soft annealed (+A) general
| Property |
Temperature |
Value |
| Density |
20.0 °C |
Density of 7.65 - 7.7 g/cm³ |
DIN 17440 Grade X4CrMoS18 soft annealed (+A) thermal
| Property |
Temperature |
Value |
Comment |
| Coefficient of thermal expansion |
-100.0 °C |
Coefficient of thermal expansion of 9.2E-6 1/K |
- |
| - |
20.0 °C |
Coefficient of thermal expansion of 9.9E-6 1/K |
- |
| - |
100.0 °C |
Coefficient of thermal expansion of 1E-5 - 1.03E-5 1/K |
- |
| - |
200.0 °C |
Coefficient of thermal expansion of 1.05E-5 - 1.08E-5 1/K |
- |
| - |
300.0 °C |
Coefficient of thermal expansion of 1.05E-5 - 1.12E-5 1/K |
- |
| - |
400.0 °C |
Coefficient of thermal expansion of 1.05E-5 - 1.16E-5 1/K |
- |
| - |
500.0 °C |
Coefficient of thermal expansion of 1.1E-5 - 1.19E-5 1/K |
- |
| - |
600.0 °C |
Coefficient of thermal expansion of 1.21E-5 1/K |
- |
| - |
700.0 °C |
Coefficient of thermal expansion of 1.24E-5 1/K |
- |
| - |
800.0 °C |
Coefficient of thermal expansion of 1.29E-5 1/K |
- |
| - |
900.0 °C |
Coefficient of thermal expansion of 1.34E-5 1/K |
- |
| - |
1000.0 °C |
Coefficient of thermal expansion of 1.39E-5 1/K |
- |
| Melting point |
- |
Melting point of 1370 - 1530 °C |
Typical for Martensitic Stainless Steel |
| Specific heat capacity |
20.0 °C |
Specific heat capacity of 450 - 460 J/(kg·K) |
- |
| - |
100.0 °C |
Specific heat capacity of 482 J/(kg·K) |
- |
| - |
200.0 °C |
Specific heat capacity of 506 J/(kg·K) |
- |
| - |
300.0 °C |
Specific heat capacity of 525 J/(kg·K) |
- |
| - |
400.0 °C |
Specific heat capacity of 547 J/(kg·K) |
- |
| - |
500.0 °C |
Specific heat capacity of 576 J/(kg·K) |
- |
| - |
600.0 °C |
Specific heat capacity of 616 J/(kg·K) |
- |
| Thermal conductivity |
20.0 °C |
Thermal conductivity of 19.6 - 25 W/(m·K) |
- |
| Thermal diffusivity |
20.0 °C |
Thermal diffusivity of 5.7 mm²/s |
- |
DIN 17440 Grade X4CrMoS18 soft annealed (+A) chemical
| Property |
Value |
| Carbon |
Carbon of 0.06 % |
| Chromium |
Chromium of 16.5 - 18.5 % |
| Manganese |
Manganese of 1.5 % |
| Molybdenum |
Molybdenum of 0.2 - 0.6 % |
| Phosphorus |
Phosphorus of 0.06 % |
| Silicon |
Silicon of 1 % |
| Sulfur |
Sulfur of 0.15 - 0.35 % |
DIN 17440 Grade X4CrMoS18 soft annealed (+A) electrical
| Property |
Temperature |
Value |
| Electrical resistivity |
20.0 °C |
Electrical resistivity of 6.17E-7 - 7E-7 Ω·m |
DIN 17440 Grade X4CrMoS18 soft annealed (+A) mechanical
| Property |
Temperature |
Value |
Comment |
| Elastic modulus |
20.0 °C |
Elastic modulus of 196 - 216 GPa |
- |
| - |
100.0 °C |
Elastic modulus of 213 GPa |
- |
| - |
200.0 °C |
Elastic modulus of 207 GPa |
- |
| - |
300.0 °C |
Elastic modulus of 200 GPa |
- |
| - |
400.0 °C |
Elastic modulus of 192 GPa |
- |
| Elongation |
20.0 °C |
Elongation of 20 % |
- |
| Hardness, Brinell |
20.0 °C |
Hardness, Brinell of 200 [-] |
- |
| Poisson's ratio |
23.0 °C |
Poisson's ratio of 0.3 [-] |
Typical for Martensitic Stainless Steel |
| Shear modulus |
23.0 °C |
Shear modulus of 77 GPa |
Typical for Martensitic Stainless Steel |
| Tensile strength |
20.0 °C |
Tensile strength of 450 - 650 MPa |
- |
| Yield strength Rp0.2 |
20.0 °C |
Yield strength Rp0.2 of 270 MPa |
- |
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