ERGSTE® 1.4404 UA
Stainless austenitic acid resistant freecutting steel – Stock standard
Product standard:
EN 10088-3
Material standard:
W.Nr.1.4404 mod* (1.4404+S+Cu) (~1.4598)
DIN X2CrNiMo17-12-2+S+Cu
~AISI 316L (S+Cu)
*Deviation from standard chemistry.
Material description:
ERGSTE® 1.4404 UA is a stainless austenitic chrome-nickel-molybdenum freecutting steel. The addition of sulphur and copper improves the machinability in comparison to standard 1.4404 / 316L steels.
Chemical analysis (%):
| Element: | ERGSTE® 1.4404 UA |
| Kol [C] max. | 0,03 |
| Kisel [Si] max. | 1,00 |
| Mangan [Mn] max. | 2,00 |
| Fosfor [P] max. | 0,045 |
| Svavel [S] | 0,10 – 0,15 |
| Krom [Cr] | 16,50 – 18,50 |
| Molybden [Mo] | 2,00 – 2,50 |
| Nickel [Ni] | 10,00 – 13,00 |
| Koppar [Cu] max. | 1,00 – 1,50 |
| Kväve [N] max. | 0,11 |
| Järn [Fe] | Rest |
Mechanical properties:
Tensile strength, Rm: 825 – 975 MPa. (deviations possible)
Condition:
Drawn, ground, polished
Technical properties:
Straightness: ≤ 0,5 mm / 1000 mm
Surface roughness: Rmax ≤ 5µm / Rz ≤ 3µm / Ra ≤ 0,5µm
Delivery form:
Lengths of 3000 mm (±50 mm)
Tolerances:
According to DIN EN 10278 – ISO h07 / h08
| Diameter: | ISO h08 [mm] | ISO h07 [mm] |
| >1 to 3 | +0/-0,014 | +0/-0,010 |
| >3 to 6 | +0/-0,018 | +0/-0,012 |
| >6 to 10 | +0/-0,022 | +0/-0,015 |
| >10 to 18 | +0/-0,027 | +0/-0,018 |
Stock dimensions:
| Dia. [mm] |
Tol. EN ISO |
Rm [MPa] | Ends |
| 3,00 | h7 / h8 | 825 - 975 | Fasad / spetsad |
| 4,00 | h7 / h8 | 825 - 975 | Fasad / spetsad |
| 5,00 | h7 / h8 | 825 - 975 | Fasad / spetsad |
| 6,00 | h7 | 825 - 975 | Fasad / spetsad |
| 8,00 | h7 | 825 - 975 | Fasad / spetsad |
Dimensions in range ø 0,70-28 are offered on request.
Typical applications:
Machined parts for use in corrosive environments.
Tests and certificates:
Certificate according to EN 10204/3.1.
ERGSTE is a Zapp® brand name.
Zapp® is a registered trademark of Zapp AG.
Zapp holds the following certificates and approvals: ISO 9001, ISO TS 16949 for automotive applications, AS 9100 for aeronautical applications, Pressurized Container Directives 97/23/EC and AD2000-W0.
Zapp-group representatives in Scandinavia: B.B.S. i Halmstad AB.
Subject to typing errors.