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UNS 31600

  • Introduction

 Grade S31600 is the molybdenum grade defined in the UNS system, which comes after the UNS S30400 in its importance within the austenitic stainless steels. The molybdenum offers         S31600 enhanced corrosion resistant properties than SUS 304, especially more resistance to crevice corrosion and also pitting in chloride atmosphere.

  • Chemical composition and Mechanical properties Of  UNS 31600

Chemical composition Of UNS 31600 :

UNS 316000.082.00.750.0450.03016-182.00-3.0011.00-14.000.1

Mechanical properties Of UNS 31600 :

GradeTensile Strength (MPa)Proof Stress (MPa)Elongation A50 mmHardness BrinellReduction of area ψ (%)Yield strength (N/mm2)
UNS 31600500-700200Min40% Min215 Max HB ≥60≥205
  • Application

Coastal development paneling, trim and railings

Process utilities, instrumentation in lab and chemical industry

Instruments and utilities in food preparation in chloride environments

Instruments and processing utilities in textile industry

Fittings, and accessories in boating and marine industry

Instruments and processing utilities in pharmaceutical industry

Instruments used in pollution control

Heat exchangers in coastal environment filled with chlorides

  • Other Analysis

Why S31600 called Grade 316 Stainless Steel? When a material grade is specified as stainless steel, it means it has chromium content but this grade has molybdenum in it that makes it different. S31600 is the UNS designation alloy, also referred as 316 alloy in SAE designation and is defined in ASTM A240 standard.

Alloy UNS S31600 offers excellent and high temperature tensile, creep and stress-rupture strengths. Moreover it also gives outstanding formability and weld-ability. S31600 is the higher carbon version of S31603 and is influenced from sensitization; thus heavy welded sections in Grade 316 may need post-weld annealing for maximum corrosion resistance unlike 316L.

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*JM Steel has hundreds of millions of high-end processing equipment at home and abroad, including precision cutting equipment: advanced Italian Nova stainless steel Kaiping production line, Taiwan Weitai stainless steel cross-cutting line, Taiwan Weitai stainless steel slitting line, large-scale stainless steel cold and hot rolling Flattening machine, slitting machine, etc.


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