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SS 316 and Tin(II) Chloride: Chemical Resistance

Stainless steel 1.4401 (AISI 316)

Rating

Concentration20 °C50 °CRemark
aqueousCD
saturatedCD

Material comparison at 20 °C

Tin(II) Chloride: Material comparison at 20 °CSS 316: C (highlighted); EPDM: A; FEP: A; Viton (FPM): A; HDPE: A; LDPE: A.EPDM: AFEP: AViton (FPM): AHDPE: ALDPE: ANBR: APolycarbonate: APP: APolystyrene: APTFE: APVC Rigid: APVC Flexible: APVDF: ASAN: AAcetal (POM): BSS 316: C316Aluminium: DNylon (PA): DSS 304: DECTFE/ETFE: –PETG: –PMP: –Polysulfone: –Silicone: –
A very good resistanceB good resistanceC limited resistanceD not resistantno data
Each bar is one material. Taller bars indicate better resistance. The highlighted bar is the current material.

Resistance overview

SS 316 maintains a consistent rating of C across all 2 tested concentrations (aqueous, saturated) of Tin(II) Chloride at 20 °C. The fact that the rating does not change with concentration within the tested range simplifies material selection, though the boundary conditions beyond this range remain untested. However, at 50 °C the resistance rating drops, indicating that temperature must be factored into the design. For heated applications, additional testing under actual service conditions is strongly recommended.

Application context

Tin(II) Chloride is commonly encountered in chemical processing and bleaching. SS 316 (Stainless steel 1.4401 (AISI 316)) is a metal typically used for vessels, heat exchangers, fittings and structural components. Because Tin(II) Chloride is classified as corrosive, the choice of containment material is especially critical to prevent leaks, equipment damage, and safety hazards.

Practical recommendation

SS 316 has limited resistance to Tin(II) Chloride and should only be used for short-term or intermittent contact at ambient temperature. The C rating means the material undergoes noticeable changes — swelling, loss of strength, or surface degradation — that make it unsuitable for permanent installations. For prolonged or continuous exposure, HDPE, LDPE, Polycarbonate offer significantly better resistance and are rated A.

Did you know?

Stainless steel 1.4401 (AISI 316) was first developed in the 1920s and remains one of the most widely used metals in chemical handling equipment.

Materials rated A or B at 20 °C

Based on the row for saturated, 20 °C.

Thermoplastics
HDPE A, PP A, PVC Rigid A, LDPE A, Acetal (POM) B, Polycarbonate A, PVC Flexible A, Polystyrene A, SAN A
Fluoropolymers
PTFE A, PVDF A, FEP A
Elastomers
EPDM A, Viton (FPM) A, NBR A

About SS 316

Stainless steel 316 (1.4401) contains molybdenum, which improves resistance to chlorides over 304. Hydrochloric acid and other halide acids still cause pitting.

Rating scale

A rating marked * is an estimate in the source, not a test result. An estimate is given as one value without a temperature.

About this data

The ratings come from the chemical resistance list published by Bürkle GmbH, which compiled them from raw-material manufacturers’ data. They describe laboratory tests on the raw material at 20 °C and 50 °C.

A finished part also sees pressure, mechanical stress, welds and mixtures that a laboratory test does not. Treat the rating as a first filter and test under your own conditions before relying on it.