Is EN 1.4401 the same as 316?
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1.4401 stainless steel equivalent：
GB-T standard: S31608, 06Cr17Ni12Mo2, 0Cr17Ni12Mo2
ASTM standard: S31600
JIS standard: SUS316
DIN standard: 1.4401
EN standard: X5CrNiMo17-12-2
316 stainless steel contains molybdenum, which improves corrosion resistance. This is particularly evident against pitting and crevice corrosion in chloride environments. It also has excellent toughness even at low temperatures.
Specification: EN 10088-3:2005
1.4401 Steel Chemical Composition
| (C) | 0.0-0.07 |
| (Cr) | 16.50-18.50 |
| (Mo) | 2.00-2.50 |
| (Si) | 0.0-1.00 |
| (P) | 0.0-0.05 |
| (S) | 0.0-0.03 |
| (Ni) | 10.00-13.00 |
| (Mn) | 0.0-2.00 |
| (N) | 0.0-0.11 |
1.4401 Steel Physical Properties
| Density | 8.0 g/cm³ |
| Melting point | 1400°C |
| Thermal expansion | 15.9 x10 ^ -6 / K |
| Elastic modulus | 193gal |
| Thermal conductivity | 16.3 W/m |
| Resistivity | 0.74 x10^-6Ω. m |
316 Stainless Steel Corrosion Resistance
The 316 series has excellent corrosion resistance when exposed to a variety of corrosive environments and media. It is often considered a "marine grade" stainless steel, but it is not resistant to warm seawater. Warm chloride environments can cause pitting and crevice corrosion. Grade 316 steel can also suffer from stress corrosion cracking at temperatures above 60°C.
316 Stainless Steel Heat Resistance
316 has good oxidation resistance when working intermittently to 870°C and continuously to 925°C. However, if corrosion resistance in water is required, continuous use at temperatures of 425-860°C is not recommended. In this case, 316L is recommended due to its resistance to carbide precipitation.
316 Stainless Steel Hot Working
All common hot working processes can be performed on 316 stainless steel. Avoid hot working below 927°C. The ideal temperature range for hot working is 1149-1260°C. Post-work annealing is recommended to ensure optimal corrosion resistance.
