Precipitation hardenable (PH) metastable austenitic stainless steel for medium cyclic fatigue and elevated temperature.

GARBA 177 PH is a semi-austenitic precipitation-hardenable stainless steel with high relaxation resistance at elevated temperatures and excellent fatigue properties. This material has good formability and good form stability during the precipitation hardening heat treatment and a moderate level of corrosion resistance.  

Corrosion resistance
High tensile

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High fatigue strength

for applications with moderate cyclic fatigue requirements

Stainless Steel

Precipitation hardening for increased strength with maintained ductility during forming.

Moderate temperatures

suitable for use in slightly elevated temperatures

Product information

Technical specification

Mechanical properties

Chemical composition

Surface conditions

Physical properties



Property Value
E modulus of elasticity Abt. 190 kN/mm2 in drawn condition. Abt. 200 kN/mm2 after heat treatment.
G modulus of shear Abt. 73 kN/mm2 in drawn condition. Abt. 78 kN/mm2 after heat treatment.

Steel grades and product standards

Nearest equivalent product standards EN ISO 6931-1 ASTM A313 AMS 5678 BS 2056 301 S81 JIS G4314
Nearest equivalent steel grades EN/DIN 1.4568 AISI/SAE 631 JIS SUS 631