UNS S31703

HuaNickel UNS S31703 is a molybdenum-containing austenitic stainless steel with improved corrosion resistance over 304/304L and 316/316L stainless steels. The increased chromium, nickel and molybdenum content on 316L stainless steel improves chloride pitting and general corrosion. By controlling nitrogen addition, HuaNickel UNS S31703 can generally meet the mechanical properties of 317 straight grade while maintaining low carbon content.

UNS S31703 Chemical composition：

	Ni	Cr	Mo	Mn	Si	C	N	S	P	Fe
Min	11	18	3	–	–	–	–	–	–	Bal
Max	15	20	4	2	0.75	0.03	0.1	0.03	0.45

UNS S31703Physical properties：

Density	Melting point	Poisson’s ratio	Resistivity
0.285 lb/in3	2540 – 2630°F	0.3	475 Ohm-circ mil/ft

UNS S31703Mechanical properties：

Ultimate tensile strength, ksi	70
0.2% yield strength, ksi	30
Elongation, %	40
Hardness max., Brinell	217

UNS S31703Stainless steel characteristics：

Improved general and localized corrosion to HuaNickel 304/304L and 316/316L stainless steels

Good formability

Good weldability

UNS S31703Uses of stainless steel：

FGD system、Chemical Process Containers、Petrochemical、Pulp、Power generation condensers

Relevant standards：

ASTM: A 240 ASME: SA-240