Martensitic Stainless: 13CRS

13CRS is a quenched and tempered martensitic stainless steel, used for downhole tubulars components, packers and other subsurface equipment in sweet (CO2) environments and mild sour (H2S) environments. NACE MR0175/ISO15156 Table A19 provides a recommended limit of 1.5 psi partial pressure H2S. API 5CRA/ISO13680 classifies it as Group 1, Category 13-5-2 alloy acceptable for sour service, in the 95 ksi yield strength condition.

Corrosion Resistance

Mild

Alloy Group

Martensitic Stainless

Yield Stregth

95 - 140

Wall Tolerance

0.875

Density

0.2780

Pren

16.45 - 23.40

Element Composition

El.
Min:
Max:
C
×
0.03%
Cr
11.5%
13.5%
Ni
4.5%
6.5%
Mo
1.5%
3%
Ti
0.01%
0.5%
V
×
0.5%
Si
×
0.5%
Fe
74.945%
82.49%
Mn
×
0.5%
P
×
0.02%
S
×
0.005%

Alloy Files

13CRS-Datasheet.pdf
PDF
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