JIS G3459 SUS 317 TP Stainless Steel Pipe
JIS G3459 SUS 317 TP Stainless Steel Pipe: Corrosion-Resistant Austenitic Alloy
Comprehensive material datasheet for JIS G3459 SUS 317 TP stainless steel pipe, including chemical composition, mechanical properties, physical properties, international equivalents, and application guidance.
Hot working, cold drawing, welding, bending, flaring, machining
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JIS G3459 SUS 317 TP Stainless Steel Pipe Introduction
JIS G3459 SUS 317 TP is an austenitic stainless steel pipe grade standardized under Japan Industrial Standard G3459 for corrosion-resistant and heat-resistant service. With higher molybdenum content (3.00–4.00%) compared to SUS 316, SUS 317 offers enhanced pitting and crevice corrosion resistance in chloride-containing environments, as well as improved resistance to sulfuric acid and other reducing acids.
- Key properties: Excellent corrosion resistance, good high-temperature strength, non-magnetic in annealed condition, and excellent weldability.
- Typical delivery condition: Solution annealed and pickled.
- Widely used in chemical processing, petrochemical, and marine applications where severe corrosive media are present.
JIS G3459 SUS 317 TP Stainless Steel Pipe Chemical Composition per JIS G3459 / G4304
The chemical composition of SUS 317 austenitic stainless steel is defined in JIS G3459 (pipe standard) referencing JIS G4304 for base material. The alloy contains molybdenum (3–4%) to enhance pitting resistance. Low carbon content minimizes sensitization during welding.
- Values shown are ladle analysis limits for product thickness ≤ 50 mm.
| Element | Standard Value (wt%) | Remarks |
|---|---|---|
| Carbon (C) | ≤0.08 | L-grade (317L) requires ≤0.030 |
| Silicon (Si) | ≤1.00 | |
| Manganese (Mn) | ≤2.00 | |
| Phosphorus (P) | ≤0.045 | |
| Sulfur (S) | ≤0.030 | |
| Chromium (Cr) | 18.00 – 20.00 | Key for corrosion resistance |
| Nickel (Ni) | 11.00 – 15.00 | Stabilizes austenitic structure |
| Molybdenum (Mo) | 3.00 – 4.00 | Enhances pitting & crevice corrosion resistance |
| Nitrogen (N) | Not specified | Typically ≤0.10 |
| Iron (Fe) | Balance |
JIS G3459 SUS 317 TP Stainless Steel Pipe Physical Properties
Physical properties for SUS 317 austenitic stainless steel at ambient temperature unless otherwise noted. Data are typical for annealed condition and may vary slightly with exact chemical composition and processing.
- Thermal conductivity and specific heat increase with temperature.
- Electrical resistivity is given for reference.
| Property | Typical Value | Unit | Test Conditions / Remarks |
|---|---|---|---|
| Density (ρ) | 7.98 | g/cm³ | At 20°C |
| Modulus of Elasticity (E) | 193 | GPa | At 20°C |
| Shear Modulus (G) | 74 | GPa | At 20°C |
| Poisson' ;s Ratio (ν) | 0.30 | - | At 20°C |
| Thermal Expansion (α) | 16.0 | 10⁻⁶/K | 20 – 100°C |
| Thermal Expansion (α) | 16.5 | 10⁻⁶/K | 20 – 200°C |
| Thermal Expansion (α) | 17.0 | 10⁻⁶/K | 20 – 300°C |
| Thermal Conductivity (λ) | 14.0 | W/(m·K) | At 100°C |
| Thermal Conductivity (λ) | 15.8 | W/(m·K) | At 300°C |
| Thermal Conductivity (λ) | 17.5 | W/(m·K) | At 500°C |
| Specific Heat Capacity (c) | 500 | J/(kg·K) | 0 – 100°C |
| Electrical Resistivity (ρ_e) | 0.74 | µΩ·m | At 20°C |
JIS G3459 SUS 317 TP Stainless Steel Pipe Mechanical Properties
Mechanical properties for JIS G3459 SUS 317 TP pipe at room temperature in the solution-annealed condition. Requirements are per JIS G3459 for wall thickness up to 10 mm (adjustment factors may apply for thicker sections).
- Minimum tensile properties and elongation are mandatory; no impact or bend test requirements in this standard.
- Values for welded pipe apply to transverse specimens.
| Property | Standard Required Value | Unit | Test Condition |
|---|---|---|---|
| Tensile Strength (Rm) | ≥520 | MPa | Room temperature, longitudinal |
| Yield Strength (ReH / Rp0.2) | ≥205 | MPa | 0.2% offset, room temperature |
| Elongation (A) | ≥35 | % | Gauge length 50 mm, longitudinal |
| Hardness | ≤90 HRB / ≤200 HB | - | Typical, not mandatory in JIS G3459 |
| Modulus of Elasticity (E) | 193 | GPa | Typical at 20°C |
JIS G3459 SUS 317 TP Stainless Steel Pipe Fully Equivalent Material Standards and Substitution Grades
| Country/Region | Standard | Designation | Remarks |
|---|---|---|---|
| Europe | EN 10217-7, EN 10088-1 | 1.4449 (X5CrNiMo17-13-3) | Fully equivalent; also available as 1.4438 (X2CrNiMo18-15-4) for 317L |
| USA | ASTM A312 / A312M | TP317 | Seamless and welded austenitic stainless steel pipe; seamless TP317 corresponds |
| USA | ASME SA312 | TP317 | ASME Boiler & Pressure Vessel Code equivalent |
| International | ISO 9328-5 | X5CrNiMo17-13-3 | Equivalent to 1.4449 |
| United Kingdom | BS 3605-1 | 317S16 | Historic equivalent, now superseded by EN standards |
| China | GB/T 14976 | 0Cr18Ni12Mo3Ti (referenced) | Not identical; SUS 317 does not contain Ti; nearest is 00Cr17Ni14Mo2 (316L) or 0Cr19Ni13Mo3 (317) |
| Russia | GOST 9941 | 08Ch17N13M2T | Approximate; molybdenum lower; Ti stabilized |
JIS G3459 SUS 317 TP Stainless Steel Pipe Application Introduction
JIS G3459 SUS 317 TP is selected where standard 316L stainless steel may be insufficient in chloride pitting resistance or where acidic conditions (sulfuric, phosphoric) are present. Its superior corrosion resistance makes it suitable for a wide range of process industries.
- Welding: Excellent, using filler metals ER317 or E317 electrodes; solution annealing after welding reduces sensitization risk.
- Forming: Good formability, similar to other austenitic grades; work hardening rate moderate.
Product Applications: Corrosion-resistant piping systems, Heat exchanger tubes, Condenser tubes, Process equipment shells and internals, Flue gas desulfurization scrubbers, Acid storage and transport vessels, Welded and seamless mechanical tubing
Processed into products: Pipe spools and fittings (elbows, tees, reducers), Valve bodies and trim, Pump shafts and casings, Nozzles and flanges, Expansion joints, Instrumentation tubing, Fasteners (bolts, nuts) in corrosive media
Application industries: Chemical and petrochemical processing, Oil and gas (offshore, refineries), Pulp and paper (digesters, bleach plants), Pharmaceutical and food processing, Desalination plants and water treatment, Marine engineering and shipbuilding, Heat exchanger and condenser manufacturing
JIS G3459 SUS 317 TP Stainless Steel Pipe Similar / Alternative Materials Recommendations
| Country/Region | Standard | Designation | Remarks |
|---|---|---|---|
| Japan | JIS G3459 | SUS 317L TP | Low-carbon version (≤0.030% C); better as-welded corrosion resistance |
| Japan | JIS G3459 | SUS 316L TP | Lower Mo (2–3%); less resistant to chlorides; cost-sensitive alternative |
| Europe | EN 10217-7 | 1.4404 (X2CrNiMo17-12-2) | 316L, lower Mo content, widely used for less severe environments |
| Europe | EN 10217-7 | 1.4438 (X2CrNiMo18-15-4) | 317L, enhanced molybdenum for superior corrosion resistance |
| USA | ASTM A312 | TP316L | Lower-cost alternative when chloride resistance is less demanding |
| USA | ASTM A312 | TP317L | Low-carbon variant; better sensitization resistance; equivalent corrosion resistance to 317 |
Notes:
Heat treatment: Solution anneal at 1050–1150°C followed by rapid cooling (water quench or air cool for thin sections). Avoid slow cooling to prevent chromium carbide or sigma phase precipitation.
- For severe service, low-carbon SUS 317L is preferred to avoid intergranular corrosion after welding.
- Pickling and passivation are recommended to restore surface corrosion resistance after fabrication.
- Maximum service temperature in oxidizing environments is approximately 870°C; for continuous service, 925°C may be acceptable.
- Not recommended for use in strongly oxidizing acids like nitric acid at high temperatures, where grade 310 may be more suitable.
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