69111

Brief

69111 (0Cr12Mn5Ni4Mo3Al) is semi-austenitic precipitation hardening stainless steel. It has good corrosion resistance and high strength at medium and high temperature. Its tensile strength is ≥1570 MPa and its elongation is ≥3%. Its high strength, long life and non-deformation characteristics under strong external force are irreplaceable for general stainless steel materials.

Chemical composition, %

C	Si	Mn	S	P	Cr	Ni	Mo	Al	Fe
≤0.09	≤0.8	4.4~5.3	≤0.03	≤0.03	11.0~12.0	4.0~5.0	2.7~3.3	0.5~1.0	Bal

Typical mechanical property

Condition	Tensile strength, MPa	Yield strength, MPa	Elongation, %	Hardness, HB
520℃+Aging	≥1570	≥1280	≥3	≥444

Feature

69111 (0Cr12Mn5Ni4Mo3Al) has high strength, large resilience, strong mechanical properties, oxidation resistance, corrosion resistance and plasticity at high temperature. The comprehensive properties are superior to those of precipitation hardening stainless steel.

Application

69111 (0Cr12Mn5Ni4Mo3Al) is currently the preferred material for high temperature components in aerospace, power and petrochemical industries, which is widely used in the surface materials of leading edge flaps and wings of an aircraft.