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	PRODUCT DATA of AISI 316L

Material

AISI 316L

Product Datasheet

AK steel 316_316L_Data_Sheet Aubert Duval 316L_X18MBC

General Information

Low-carbon modification of Type 316 for welded construction

Effects of Space environment

The natural oxide layer is not repaired in vacuum when damaged. Cold welding might occur in contact to similar materials.

Chemical Composition

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

Name of Manufacturer

Many European suppliers.

	EXPERIENCE IN PRACTICE

Development Status

Commercial Product

Cost Range

Low

Lot Reproducibility

Good

Equivalent Designations

ISO 4954 X2CrNiMo17133E, UNS S31603, 1.4404, 1.4432, 1.4435, A4,AISI316L

Space Experience

Good

	PHYSICAL PROPERTIES

Crystal Structure

Face centered cubic (fcc)

Specific Gravity

7.95

Magnetic Properties

Nonmagnetic

	ELASTIC PROPERTIES

Tensile Modulus

199 GPa

Shear Modulus

79 GPa

Poisson Ratio

0.26

	ELECTRICAL PROPERTIES

Electrical Volume Resistivity

7.4e-7 ohm.m @ RT

	THERMAL PROPERTIES

Thermal Conductivity

15.8 W/m.K @RT

Thermal Expansion Coefficient

17.2 μstrain/°C Remark:RT to 200°C

Specific Heat

0.5 J/g.K

Melting Range

1370 to 1400 °C

	RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY

General Corrosion Status

No specific corrosion protection required

Stress Corrosion Status

High Resistance to SCC: Table 1 Remark: acc. to ECSS-Q-ST-70-36C Data Quality: Design Data

EMF vs SCE

-0.07 V Remark: Measured in 3.5% NaCl solution Data Quality: Design Data

Bimetallic Corrosion

Can be connected without any restriction to: Cr, Au, Pt, C, Rh, Ag, Gun-metal, P-bronzes, Sn-bronzes, Ti+alloys Can be connected in a non-controlled environment to the above and Cd, Cu, Brasses, Ni, monel, inconel, N-Mo alloys, 400 series stainless steel Can be connected in a clean room environment to above and Al-Cu alloys, Cu-Ni alloys, Al-bronzes, Si-bronzes Needs specific measures: All others Test:ECSS-Q-ST-70C Rev.1 Table 5.1 Data Quality: Design Data

	FLUID SYSTEMS COMPATIBILITY

Gaseous Oxygen (GOX)

Meets the mechanical impact requirements. No batch test required.

Liquid Oxygen (LOX)

Meets the mechanical impact requirements. No batch test required.

Nitrogen Tetroxide (N2O4)

SCC susceptibility is low and no fluid decomposition

Hydrazine (HDZE)

SCC susceptibility is low and no fluid decomposition

	SPECIAL RECOMMENDATIONS

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 860°C. · For welded applications avoid the unstabilised, higher carbon, versions