Products

Stainless Steel 309S

Additional information

UNS Number	S30908
Werkstoff Number	1.4833

Description

309S stainless steel is a highly alloyed austenitic stainless steel used for its excellent oxidation resistance, high-temperature strength and creep resistance. The lower nickel content of SS309 compared to SS310 improves resistance to hydrogen sulfide (H2S) attack at high temperatures.

309S stainless steel is an austenitic heat resisting stainless steel. 23% chromium, approx. 5% more than 304 stainless steel gives 309S stainless steel an edge over 304 stainless steel when it comes to general corrosion resistance at elevated temperatures.

309S has moderate strength and demonstrates useful performance in reducing sulphidising atmosphere

Application

Alloy 309/309S is an austenitic chromium-nickel heat resistant stainless steel with good oxidation resistance up to 1038°C.

Aircraft and jet engine parts
Auto exhaust parts
Heat exchangers
Waste incinerators
Glass blowing components
Rotary kilns
Furnace anchor bolts

Chemical Component

Chemical Components	C	Si	Mn	P	S	Cr	Ni	Mo	N
Minimum	–	–	–	–	–	22	12	–	–
Maximum	0.08	1	2	0.045	0.015	24	14	–	0.11

Mechanical Properties

**-Slightly magnetic when cold worked.

Diameter d mm	Tensile Strength σb Mpa	Yield Point σs Mpa	Elongation δ %	Hardness HBW
Bar,Wire, Profile 160<d≤250 (+AT)	500~750	≥210	≥30	≤192
Bar,Wire, Profile d≤160 (+AT)	500~750	≥210	≥30	≤192
Bar,Wire, Profile 63<d≤160 (+AT)	500~750	≥210	≥30	≤192
Bar,Wire, Profile 40<d≤63 (+AT)	500~750	≥210	≥30	≤192
Bar,Wire, Profile 16<d≤40 (+AT)	500~750	≥210	≥30	≤192