EN 1.4542 / ERGSTE® 1.4542 GG

Precipitation hardening martensitic stainless steel type 17-4PH – Stock standard


Product standard:
EN 10088-3 

Material standard:
DIN EN X5CrNiCuNb16-4
AISI 630 (17-4PH); ASTM F-899 

Material description:
ERGSTE® 1.4542 GG is a martensitic precipitation hardenable 16% chromium-nickel steel of type 17-4PH. It combines high strength and toughness with excellent corrosion resistance as well as good machinability. In conducting an appropriate heat treatment a maximum hardness of 44 HRC* can be achieved. The material is supplied in solution heat treated (annealed) condition resp. aged to cond. H900.
* Maximum hardness achievable under ideal hardening conditions.

Chemical analysis (%): 

Element: ERGSTE® 1.4542 GG
C max. 0,07
Si max. 0,70
Mn max. 1,50
P max. 0,040
S 0,03
Cr 15,0 – 17,0
Mo max. 0,60
Ni 3,00 – 5,00
Cu 3,00 – 5,00
Nb 0,15 – 0,45
Fe Rest

Mechanical properties:
Tensile strength, Rm: 900 – 1150 MPa. (A)
Tensile strength, Rm: 1400 - 1600 MPa. (H900) 

Drawn, straightened, ground, polished, solution heat treated (annealed), resp. aged (H900) 

Technical properties:
Surface roughness: Ra ≤ 0,4µm 

Delivery form:
Lengths of 3000 mm (±50 mm)

According to DIN EN 10278 – ISO h07 

Diameter: ISO h07 [mm]
>1 to 3 +0/-0,010
>3 to 6 +0/-0,012
>6 to 10 +0/-0,015
>10 to 18 +0/-0,018

Stock dimensions:

Ends Cond.
8,00 h7 1400-1600 Chamfered/ Pointed H900
12,00 h7 900–1150 Chamfered/ pointed A

Dimensions in range ø 0,70-28 are offered on request.

Typical applications:
Precision components and instruments within offshore, energy and medical industry.
The material is supplied according to ASTM F-899 (Standard Specification for Stainless Steels for Surgical Instruments). 

Tests and certificates:
Certificate according to EN 10204/3.1.
Surface according to EN 10277-1: 2008 Table 1 – Class 3. 

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.