309CB (UNS S30940)
Overview and characteristics of S30940:
S30940 is a type of most widely used precipitation hardening stainless steel. It is capable of high performance with a single precipitation or aging treatment. It is very soft and ductile in the solution annealed condition. S30940 is characterized by good corrosion resistance, high hardness and high strength. It is very suitable for high temperature service.Chemical composition of S30940 (%):
C
Mn
Si
Cr
Ni
P
S
Nb
≤0.08
≤2.00
≤1.00
22.00~24.00
12.00~15.00
≤0.045
≤0.030
≥8*%C
Mechanical property of S30940:
Yield strength (MPa)
≥205
Tensile strength (MPa)
≥515
Elongation %
≥40
Hardness
Brinell
≤217
Rockwell B
≤95
Weldability of S30940:
S30940 can be successfully welded by common fusion and resistance methods. It should not be joined by oxyacetylene welding. AWS E/ER630 filler metal is recommended if required.Our stainless steels are 100% ultrasonic inspected for any defect with relatively high quality and competitive price. For further information about material selection, heat treatment, surface treatment, welding, machining, inventory, payment terms, delivery time, etc., please do not hesitate to contact us. We will serve you with our honesty, integrity, faith and professionality.
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