SUS316 (JIS G4305) Stainless Steel Pipe
JIS G4305 SUS316 Stainless Steel: Austenitic Corrosion-Resistant Alloy for Cold-Rolled Sheets
Comprehensive data sheet for SUS316 stainless steel under JIS G4305 standard, including chemical composition, mechanical properties, physical characteristics, and international equivalents.
Welding (TIG, MIG, resistance), deep drawing, bending, stamping, machining (with appropriate tooling and coolants)
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SUS316 Stainless Steel Pipe Introduction
JIS G4305 SUS316 is a molybdenum-alloyed austenitic stainless steel supplied as cold-rolled sheet and strip. It offers superior corrosion resistance compared to SUS304, particularly against pitting and crevice corrosion in chloride-containing environments. The addition of 2–3% molybdenum significantly enhances its resistance to sulfuric acid, phosphoric acid, and organic acids. The material is non-magnetic in the annealed condition and exhibits good weldability and formability. Typical applications include chemical processing equipment, marine hardware, food and pharmaceutical vessels, and architectural panels exposed to aggressive atmospheres. It is delivered in solution-annealed and lightly skin-passed condition to meet specified mechanical and surface quality requirements.
SUS316 Stainless Steel Pipe Chemical Composition
The chemical requirements for JIS G4305 SUS316 are specified in the heat analysis. The molybdenum content enhances resistance to pitting corrosion. All values are maximum unless a range is indicated. The alloy is balanced with primarily iron content.
| Element | Standard Value (wt%) | Remarks |
|---|---|---|
| Carbon (C) | ≤ 0.08 | |
| Silicon (Si) | ≤ 1.00 | |
| Manganese (Mn) | ≤ 2.00 | |
| Phosphorus (P) | ≤ 0.045 | |
| Sulfur (S) | ≤ 0.030 | |
| Nickel (Ni) | 10.00 – 14.00 | |
| Chromium (Cr) | 16.00 – 18.00 | |
| Molybdenum (Mo) | 2.00 – 3.00 | |
| Iron (Fe) | Remainder | Balance |
SUS316 Stainless Steel Pipe Thermal and Electrical Physical Properties
The following physical properties are typical for SUS316 in the solution-annealed condition at room temperature unless otherwise noted. These values are representative for material evaluation and design calculations.
| Property | Standard / Typical Value | Unit | Test Condition |
|---|---|---|---|
| Density (ρ) | 7.98 | g/cm³ | At 20 °C |
| Modulus of Elasticity (E) | 193 | GPa | At 20 °C |
| Shear Modulus (G) | 77 | GPa | At 20 °C |
| Poisson's Ratio (ν) | 0.3 | – | At 20 °C |
| Coefficient of Thermal Expansion (α) | 16.0 | 10⁻⁶ /K | 20–100 °C |
| Coefficient of Thermal Expansion (α) | 17.0 | 10⁻⁶ /K | 20–300 °C |
| Coefficient of Thermal Expansion (α) | 17.5 | 10⁻⁶ /K | 20–500 °C |
| Thermal Conductivity (λ) | 13.5 | W/(m·K) | At 20 °C |
| Thermal Conductivity (λ) | 16.2 | W/(m·K) | At 100 °C |
| Thermal Conductivity (λ) | 21.5 | W/(m·K) | At 500 °C |
| Specific Heat Capacity (c) | 500 | J/(kg·K) | At 20 °C |
| Electrical Resistivity (ρ_e) | 0.74 | μΩ·m | At 20 °C |
SUS316 Stainless Steel Pipe Mechanical Properties
The following mechanical properties are the minimum requirements as specified in JIS G4305 for cold-rolled SUS316 sheets and strips in the solution-annealed condition. Elongation requirements are thickness-dependent. Hardness values are for reference.
| Property | Required Value (min. unless noted) | Unit | Test Condition / Thickness Range |
|---|---|---|---|
| Yield Strength (0.2% offset, ReH / Rp0.2) | ≥ 205 | MPa | Room temperature, all thicknesses |
| Tensile Strength (Rm) | ≥ 520 | MPa | Room temperature, all thicknesses |
| Elongation (A) | ≥ 40 | % | Thickness < 3 mm (gage length 50 mm) |
| Elongation (A) | ≥ 40 | % | Thickness ≥ 3 mm (gage length 50 mm) |
| Hardness (HBW) | ≤ 187 | HB | Typical maximum |
| Hardness (HRB) | ≤ 90 | HRB | Typical maximum |
| Hardness (HV) | ≤ 200 | HV | Typical maximum |
SUS316 Stainless Steel Pipe Fully Equivalent Material Standards and Substitutable Grades
| Country/Region | Standard | Grade | Remarks |
|---|---|---|---|
| Europe | EN 10088-2 / EN 10088-3 | 1.4401 / X5CrNiMo17-12-2 | Identical composition and comparable properties; suitable for cold-rolled sheet. |
| United States | ASTM A240 / A240M | 316 | Direct equivalent for plate, sheet, and strip. |
| China | GB/T 3280 | 06Cr17Ni12Mo2 (old 0Cr17Ni12Mo2) | Matches SUS316 in chemical and mechanical requirements. |
| International | ISO 15510 | X5CrNiMo17-12-2 | Identical designation; includes sheet/strip products. |
| Japan (other forms) | JIS G4304, G4303 | SUS316 | Hot-rolled sheet/plate and bars, same alloy but different standards. |
SUS316 Stainless Steel Pipe Application Introduction
JIS G4305 SUS316 cold-rolled sheets find widespread use where standard 18-8 stainless (SUS304) cannot withstand pitting or crevice corrosion. Its excellent formability and weldability make it suitable for fabricating complex components. The alloy is widely adopted in industries handling chlorides, acids, and marine atmospheres.
Product Applications: Chemical storage tanks and pressure vessels, Piping and tubing systems (seamless/welded), Sanitary and hygienic fittings, Kitchen sinks, countertops, and catering equipment, Surgical implants and dental instruments, Marine handrails, fasteners, and propeller shafts, Architectural cladding panels and roofing, Heat exchanger plates and spiral tubes, Pharmaceutical fermenters and reactor vessels, Water desalination unit components
Processed into products: Flanges, gaskets and mechanical couplings, Deep-drawn sinks and hollowware, Precision stamped battery springs and connectors, Welded tubular structures and manifolds, Surgical scissor blades and forceps, Evaporator sheets and condensing coils, Seawater pump impellers and shafts, Laboratory table tops and fume hood linings, Custom profiles for architectural glass support
Application industries: Chemical and petrochemical processing, Marine and offshore engineering, Food and beverage production, Pharmaceutical and biotechnology, Medical and surgical equipment, Pulp and paper bleaching systems, Architectural and construction (coastal facades), Heat exchangers and condensers, Water treatment and desalination, Textile and dyeing machinery
SUS316 Stainless Steel Pipe Closely Related / Similar Alternative Materials
| Country/Region | Standard | Grade | Remarks |
|---|---|---|---|
| Global | EN 10088-2 / ASTM A240 / JIS G4305 | 316L / 1.4404 / SUS316L | Low-carbon variant (C ≤0.030) for improved weldability and resistance to intergranular corrosion. Slightly lower strength. |
| Global | ASTM A240 / EN 10088-2 | 316H / 1.4401 with high carbon | Higher carbon (0.04–0.10) for elevated-temperature strength; less common for sheet. |
| Europe | EN 10088-2 | 1.4436 / X3CrNiMo17-13-3 | Higher molybdenum (2.5–3.5%) and nickel (12.5–15.0) for enhanced corrosion resistance in aggressive media. |
| Global | EN 10088-2 / ASTM A240 | 4571 / 1.4571 / 316Ti | Titanium-stabilized version of 316 to prevent sensitization; used in thicker sections for welded applications. |
| Japan | JIS G4305 (or G4304) | SUS316J1 / SUS316J1L | Modified version with higher molybdenum (3–4%) and copper for improved sulfuric acid resistance. |
Notes:
Additional information:
- JIS G4305 covers cold-rolled stainless steel sheets and strips; for piping applications, the corresponding tubing standard is JIS G3459 (SUS316TP). This data sheet refers to the raw material form of sheet/strip.
- Intergranular corrosion resistance may be reduced after welding or slow cooling. Post-weld solution annealing or use of low-carbon 316L is recommended for heavy sections.
- Material should be protected from contamination by carbon steel during storage and processing to prevent surface rust stains.
- Typical values for mechanical and physical properties are provided for reference and are not guaranteed minima. Always refer to the specific certificate for the product lot.
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