Stainless Steel SUS317J2
JIS SUS317J2
SUS317J2 is a higher-alloy JIS variant of 317 with increased molybdenum and nickel for chloride pitting resistance in aggressive process streams (corrosion score 82, the highest in this 317 group).
Reference datasheet — SUS317J2 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the Annealed condition
SUS317J2 tempers and conditions
SUS317J2 is supplied in 6 conditions, soft to hard. Annealed is the default FabDigit quotes; the values on this page are for it.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Hot Rolled No.1 | Heavy plate condition for FGD absorbers, scrubbers and pressure-vessel shells. | 380 | 710 | 50 | 175 HB | 2 % IACS |
AnnealedDefault solution annealed and quenched (JIS ) | Standard supply condition for plate, sheet, pipe and bar where maximum corrosion resistance is required. | 390 | 720 | 48 | 180 HB | — |
Cold drawn | Bar stock with better straightness, tolerance and strength for shafts, fasteners and valve stems. | 570 | 830 | 30 | 22 HRC | 2 % IACS |
Quarter hard | Light cold work when higher yield strength is needed with retained formability. | 600 | 860 | 25 | 24 HRC | 2 % IACS |
Half hard | Strip/wire condition for springy parts and clamps where corrosion resistance must stay high. | 760 | 1,000 | 15 | 30 HRC | 2 % IACS |
Full hard | Maximum strength cold-worked strip or wire; forming is limited to simple bends. | 1,000 | 1,250 | 6 | 38 HRC | 2 % IACS |
Supply forms, finishes and certifications
Ways SUS317J2 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
2B | Cold rolled, annealed, pickled, skin-passed sheet | Surface finish |
What is SUS317J2?
SUS317J2 is a higher-alloy JIS variant of 317 with increased molybdenum and nickel for chloride pitting resistance in aggressive process streams (corrosion score 82, the highest in this 317 group). It is used in desalination, chemical and flue-gas plant as annealed and 2B sheet, hot-rolled No.1 plate, cold-drawn bar and 1/4H to full-hard strip. Listed properties are 390 MPa yield, 720 MPa tensile, 48 % elongation and 180 HB, so press loads are high (formability score 65) and machining is slow. Availability and price are the main limits; 904L or a 6 % Mo super austenitic are the nearest alternatives. SUS317J2 has a density of 8 g/cm³ (0.289 lb/in³), heavier than 92% of stainless steel grades. It melts at 1,370°C (2,498 °F). SUS317J2 has a yield strength of 390 MPa (56.6 ksi) and a tensile strength of 720 MPa (104 ksi) — stronger than 54% of stainless steel grades. Elongation at break is 48% and the elastic modulus is 195 GPa (28.3 Msi).
What is SUS317J2 used for?
- seawater desalination
- chemical processing
- flue gas equipment
Advantages
- Good corrosion resistance — 82/100, better than 90% of stainless steel grades
- Polishes to a fine finish — 80/100, better than 89% of stainless steel grades
- Ductile — tolerates forming and impact — 48%, better than 85% of stainless steel grades
Limitations
- Poor heat conductor — 13 W/m·K (7.51 BTU/hr·ft·°F), worse than 85% of stainless steel grades
- Low electrical conductivity — 2 % IACS, worse than 77% of stainless steel grades
SUS317J2 properties
Typical room-temperature values for SUS317J2-Annealed; bars are the position among stainless steel grades.
Physical3
SUS317J2 has a density of 8 g/cm³ (0.289 lb/in³), heavier than 92% of stainless steel grades. It melts at 1,370°C (2,498 °F).
Mechanical14
SUS317J2 has a yield strength of 390 MPa (56.6 ksi) and a tensile strength of 720 MPa (104 ksi) — stronger than 54% of stainless steel grades. Elongation at break is 48% and the elastic modulus is 195 GPa (28.3 Msi).
Thermal6
SUS317J2 is rated for continuous service to 550°C (1,022 °F). It conducts heat at 13 W/m·K (7.51 BTU/hr·ft·°F), worse than 85% of stainless steel grades. Thermal expansion is 16 µm/m·K (8.89 µin/in·°F).
Electrical3
SUS317J2 conducts electricity at 2 % IACS, worse than 77% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is very good (82/100), better than 90% of stainless steel grades.
Sustainability4
Producing a kilogram of SUS317J2 takes about 60 MJ of energy and emits 4.5 kg of CO₂ — more than 70% of stainless steel grades. Typical recycled content is 55%.
Manufacturability7
SUS317J2's machinability is poor (30/100, worse than 70% of stainless steel grades); weldability very good (70/100); formability good (65/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the stainless steel family
Yield strength against density for every stainless steel grade FabDigit runs. SUS317J2 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with SUS317J2
Is SUS317J2 easy to machine?
Gummy and strongly work-hardening — use rigid setups, positive-rake carbide, heavy feeds, low-to-moderate speed and flood coolant; avoid dwelling.
Can SUS317J2 be welded?
Readily welded by GTAW/GMAW with over-alloyed filler (ER317L, ER385/904L or Ni-base 625); keep interpass low and heat input modest to avoid σ/χ phase, no PWHT normally required.
Can SUS317J2 be formed, bent or molded?
Cold forms well but needs ~50 % more press force than 304 and generous springback allowance; hot work at 1100–1200 °C followed by rapid cooling from solution temperature.
SUS317J2 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| C | ≤ 0.06 | 0.03 |
| Si | ≤ 1 | 0.5 |
| Mn | ≤ 2 | 1.2 |
| P | ≤ 0.05 | |
| S | ≤ 0.03 | |
| Ni | 15 – 17 | 16 |
| Cr | 23 – 26 | 24.5 |
| Mo | 4 – 6 | 5 |
| Nnitrogen commonly added by producers to raise PREN; check mill spec | ≤ 0.2 | 0.12 |
| Fe | balance |
What surface finishes work on SUS317J2?
Pickle and passivate (or electropolish) after welding to restore the passive film; not anodizable, mechanical polishing to mirror finish is straightforward.
Surface treatments FabDigit runs on stainless steel parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
Passivation
Organic Coating
Thermal Spray
How much does SUS317J2 cost?
SUS317J2 is a high-cost stainless steel ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
SUS317J2 — frequently asked
What is SUS317J2 used for?
SUS317J2 is typically used for seawater desalination, chemical processing and flue gas equipment. In short: most corrosion-resistant 317 variant; chloride-service austenitic; high strength, hard to form.
What is the yield strength of SUS317J2?
SUS317J2 has a typical yield strength of 390 MPa (56.6 ksi) and a tensile strength of 720 MPa (104 ksi) — stronger than 54% of stainless steel grades. Strength varies by condition: see the 6 listed tempers.
Is SUS317J2 easy to machine?
Not especially — machinability is rated poor (30/100, worse than 70% of stainless steel grades). Gummy and strongly work-hardening — use rigid setups, positive-rake carbide, heavy feeds, low-to-moderate speed and flood coolant; avoid dwelling.
Can SUS317J2 be welded?
Yes — weldability is rated very good (70/100). Readily welded by GTAW/GMAW with over-alloyed filler (ER317L, ER385/904L or Ni-base 625); keep interpass low and heat input modest to avoid σ/χ phase, no PWHT normally required.
What surface finishes work on SUS317J2?
Pickle and passivate (or electropolish) after welding to restore the passive film; not anodizable, mechanical polishing to mirror finish is straightforward.
Can SUS317J2 be formed, bent or molded?
Cold forms well but needs ~50 % more press force than 304 and generous springback allowance; hot work at 1100–1200 °C followed by rapid cooling from solution temperature.
What is the maximum service temperature of SUS317J2?
SUS317J2 is rated for continuous use to about 550°C (1,022 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between SUS317J2 Annealed and SUS317J2-FH?
Annealed is the default condition — standard supply condition for plate, sheet, pipe and bar where maximum corrosion resistance is required. FH: maximum strength cold-worked strip or wire; forming is limited to simple bends. Yield strength is 390 MPa in Annealed versus 1,000 MPa in FH.
How much does SUS317J2 cost?
SUS317J2 is a high-cost stainless steel ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- JIS G 4304 / G 4305 — Hot rolled and cold rolled stainless steel plate, sheet and strip — Japanese Standards Association (2021)
- JIS G 4303 — Stainless steel bars — Japanese Standards Association (2021)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels and High-Performance Alloys — ASM International (1990)
- High-molybdenum austenitic stainless steel product literature — Nippon Steel Stainless / Outokumpu (2022)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.