A.6.3. Stainless Steel AISI 316L

PRODUCT

Type

Metal Alloy

Chemical Composition

12% Ni, 17% Cr, 2.5% Mo, 2% Mn, 1% Si, 0.03% C max, Rem. Fe

Manufacturer

Many European suppliers.

 

EXPERIENCE & AVAILABILITY

Development Status

Commercial Product

Cost Range

Low

Lot Reproducibility

ISO 4954 X2CrNiMo17133E, UNS S31603

Space Experience

Good

GENERAL PROPERTIES (Physical, Mechanical, Thermal, Electrical, Optical)

Nature

Typical Value

Remarks

Specific Gravity

8.0

@ Room Temperature

Ultimate Tensile Strength

560 MPa

@ Room Temperature

Proof Stress (0.2%)

290 MPa

@ Room Temperature

Elongation at Break

50%

@ Room Temperature, varies with thickness.

Thermal Conductivity

16 W m -1 C -1

@ Room Temperature

Thermal Expansion Coefficient

17.2 x 10-6 C -1

RT to 200C

Electrical Resistivity

0.74 x 10-6 W m

@ Room Temperature

PROPERTIES RELEVANT TO SPACE USE

Nature

Typical Value

Type of Test

Corrosion

High resistance.

 

Stress Corrosion

High resistance (refer to ECSS-Q-70-36).

 

SPECIAL RECOMMENDATIONS

          AISI 316L is the low carbon version of AISI 316 (0.08 %C) which may be susceptible to intergranular corrosion in certain corrosive media after it is welded or otherwise heated at temperatures between 430 and 860C.

          For welded applications avoid the unstabilised, higher carbon, versions.