Steel card
1.4841/314
VALBRUNA GRADE
APFI/SI
STEEL TYPE
Austenitic Stainless Steel
Profile shapes
- Round EN 10060 / EN 10278
- Flat EN 10058 / EN 10278
Square EN 10059 / EN 10278 - Hexagonal EN 10278
- Angle EN 10056
- Bar steel, bright steel, wire, wire rod, billets, ingots, semi-finished products
Description of material
APFI/SI is a Chromium-Nickel –Silicon austenitic stainless steel with good heat resisting properties such as scaling and creep at elevated temperature and a suitable resistance to carburizing and reducing atmospheres better than type 304/316 series steels.
Applications
This grade is designed for service in high temperature environments, where it offers very good corrosion and creep resistance. It’s widely use in engineering and automotive industries, the chemical industry, petrol-chemical and refinery plants.
Designations
| AISI | 314 |
| W.N. | 1.4841 |
| UNS | S31400 |
| EN | X15CrNiSi25-21 / X15CrNiSi25-20 |
| BS | 314S25 |
Chemical composition
| Chemical element | C | Mn | Si | P | S | Cr | Ni | N |
| Minimum value % | - | - | 1,5% | - | - | 24% | 19% | - |
| Maximum value % | 0,2% | 2% | 2,5% | 0,045% | 0,015% | 26% | 22% | 0,11% |
Mechanical properties
| Condition | Subtype | Rm [N/mm²] | Rm [Ksi] | Rp0,2% [N/mm²] | Rp0,2% [Ksi] | E4d [%] | HBW |
| Solution Annealed | A | 550 - 750 | 80 - 109 | 230 min | 33 min | 40 min | 223 max |