1.4948
- 304H
- S 30409
Most Widely Used Austenitic Stainless Steel Modified with a Controlled Carbon Chemistry for Increased Strength to 1500°F (816°C).Excellent heat resistance in raised temperatures.
Mechanical Properties
| Tensile strength: | 500-700 | N/mm² |
| Yield strength 0,2% : | 230 | ≥ N/mm² |
| Elongation: | 40 | ≥ % |
| Hardness HB30: | 201 | ≤ HB |
Chemical Composition
Carbon
C
0,04-0,08% max
Silicon
Si
1,00% max
Magnese
Mn
2% max
Phosphorus
P
0,035% max
Sulphur
S
0,015% max
Chromium
Cr
17,0-19,0%
Nickel
Ni
8,0-11,0% max
Heat Treatment
1040°C followed by water quenching
It resists atmospheric corrosion, as well as, moderately oxidizing and reducing environments. However, because of its high carbon content, Alloy 304/304H is subject to carbide precipitation in the heat affected zone of welds.
It can be easily welded and processed by standard shop fabrication practices.
Marking
All material will be marked as follow:
- Manufacturer’s name
- Material grade
- Size
- Heat Number
Certification
Material will be delivered with certificate EN 10204 3.1
