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GH1139 (GH139) High Strength Austenitic Oxidation Resisting Steel- TJC STEEL.
 GH1139, original GH139, also expressed as 12 cr25ni16mn7nb, brand comes from the former Soviet union Э И 835, is a veteran of austenite[TJC STEEL] steel body is strong, its density is 7.83 g/cm3, main products for the sheet and rod form.

 

Component Specification(GB/T 14992-2005)

C

≤0.12

Cr

23.00~26.00

Ni

15.00~18.00

Si

≤1.00

P

≤0.035

N

0.30~0.45

Mn

5.00~7.00

S

≤0.020[TJC STEEL] 

B

≤0.010

 

Applications:

The performance level of GH1139 alloy is similar to that of GH3030 alloy. It has the characteristics of good hot working plasticity, stable structure [TJC STEEL] and friendly welding. It is suitable for making high-temperature bearing parts such as combustion chamber after stamping and welding, such as gas conduit parts made of thin plate, strip and profile working at 800~950℃ and medium stress.