Stainless Steel E317
EN E317 · UNS W31710
E317 is an austenitic stainless SMAW electrode (UNS W31710) carrying higher molybdenum than E316, supplied in -15, -16 and -17 coating classes.
Reference datasheet — E317 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 AW condition
E317 tempers and conditions
E317 is supplied in 4 conditions, soft to hard. AW is the default FabDigit quotes; the values on this page are for it.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Rutile-silica coating, AC or DCEP, high deposition | Choose for flatter, wider beads and higher deposition rate on flat/horizontal fillets; slightly more fluid slag than -16. | 430 | 595 | 40 | 180 HB | 2.2 % IACS |
AWDefault As-welded deposit | Default condition: properties of the undiluted deposit in the as-welded state, no post-weld heat treatment. | 440 | 600 | 38 | 185 HB | 2.2 % IACS |
Rutile (titania) coating, AC or DCEP, all position | The most widely stocked type: smooth arc, easy slag release and good bead appearance for all-position general fabrication. | 440 | 605 | 38 | 185 HB | 2.2 % IACS |
Lime (basic) coating, DCEP only | Pick for the cleanest, lowest-oxygen deposit and best impact toughness on heavy or restrained joints; DC electrode positive only. | 450 | 595 | 36 | 185 HB | 2.2 % IACS |
What is E317?
E317 is an austenitic stainless SMAW electrode (UNS W31710) carrying higher molybdenum than E316, supplied in -15, -16 and -17 coating classes. The extra Mo raises pitting and crevice corrosion resistance in aggressive chloride and acid media, and the deposit runs about 440 MPa yield, 600 MPa tensile, 38% elongation and 185 HB (90 HRB) with a corrosion rating of 74. It carries standard carbon, so for as-welded service where intergranular attack is a risk the low-carbon E317L is the obvious alternative; both cost more and are less widely stocked than E316L. E317 has a density of 7.98 g/cm³ (0.288 lb/in³), heavier than 85% of stainless steel grades. It melts at 1,370°C (2,498 °F). E317 has a yield strength of 440 MPa (63.8 ksi) and a tensile strength of 600 MPa (87 ksi) — stronger than 68% of stainless steel grades. Elongation at break is 38% and the elastic modulus is 195 GPa (28.3 Msi).
What is E317 used for?
- pulp and paper equipment
- chemical process vessels
- flue gas desulfurization systems
Advantages
- Readily welded — 85/100, better than 87% of stainless steel grades
- Good corrosion resistance — 74/100, better than 78% of stainless steel grades
E317 properties
Typical room-temperature values for E317-AW; bars are the position among stainless steel grades.
Physical3
E317 has a density of 7.98 g/cm³ (0.288 lb/in³), heavier than 85% of stainless steel grades. It melts at 1,370°C (2,498 °F).
Mechanical16
E317 has a yield strength of 440 MPa (63.8 ksi) and a tensile strength of 600 MPa (87 ksi) — stronger than 68% of stainless steel grades. Elongation at break is 38% and the elastic modulus is 195 GPa (28.3 Msi).
Thermal6
E317 is rated for continuous service to 760°C (1,400 °F). It conducts heat at 14.4 W/m·K (8.32 BTU/hr·ft·°F), worse than 75% of stainless steel grades. Thermal expansion is 16 µm/m·K (8.89 µin/in·°F).
Electrical3
E317 conducts electricity at 2.2 % IACS, worse than 61% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is very good (74/100), better than 78% of stainless steel grades.
Sustainability4
Producing a kilogram of E317 takes about 62 MJ of energy and emits 5.2 kg of CO₂ — more than 75% of stainless steel grades. Typical recycled content is 60%.
Manufacturability7
E317's machinability is poor (33/100, worse than 57% of stainless steel grades); weldability excellent (85/100); formability good (55/100).
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. E317 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with E317
Is E317 easy to machine?
Weld deposit machines like 317 stainless: gummy and work-hardening — use sharp positive-rake carbide, rigid setup, heavy feed and flood coolant.
Can E317 be welded?
SMAW with short arc, stringer beads and interpass ≤150 °C; keep 4–10 FN delta ferrite for hot-cracking resistance; redry electrodes (≈250–300 °C, 1 h for -15 basic type) before use.
Can E317 be formed, bent or molded?
Not a wrought product; the deposit is ductile (≈38 % elongation) and tolerates weld-repair peening and light straightening.
E317 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 |
|---|---|---|
| Cuse E317L (0.04 max) where sensitization matters | ≤ 0.08 | 0.06 |
| Cr | 18 – 21 | 19.5 |
| Ni | 12 – 14 | 13 |
| Mo | 3 – 4 | 3.5 |
| Mn | 0.5 – 2.5 | 1.6 |
| Si | ≤ 0.9 | 0.5 |
| P | ≤ 0.04 | |
| S | ≤ 0.03 | |
| Cu | ≤ 0.75 | |
| Feremainder of undiluted weld metal | balance |
What surface finishes work on E317?
Grind, pickle and passivate (ASTM A380/A967) or brush with stainless-only tools to restore the passive film; do not anodize.
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
Equivalent designations
Standards and trade names that resolve to Stainless Steel E317 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- W31710
- Also called
- AWS A5.4 E317
How much does E317 cost?
E317 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.
E317 — frequently asked
What is E317 used for?
E317 is typically used for pulp and paper equipment, chemical process vessels and flue gas desulfurization systems. In short: higher Mo than E316; improved pitting resistance; chloride and acid service filler.
What is the yield strength of E317?
E317 has a typical yield strength of 440 MPa (63.8 ksi) and a tensile strength of 600 MPa (87 ksi) — stronger than 68% of stainless steel grades. Strength varies by condition: see the 4 listed tempers.
Is E317 easy to machine?
Not especially — machinability is rated poor (33/100, worse than 57% of stainless steel grades). Weld deposit machines like 317 stainless: gummy and work-hardening — use sharp positive-rake carbide, rigid setup, heavy feed and flood coolant.
Can E317 be welded?
Yes — weldability is rated excellent (85/100). SMAW with short arc, stringer beads and interpass ≤150 °C; keep 4–10 FN delta ferrite for hot-cracking resistance; redry electrodes (≈250–300 °C, 1 h for -15 basic type) before use.
What surface finishes work on E317?
Grind, pickle and passivate (ASTM A380/A967) or brush with stainless-only tools to restore the passive film; do not anodize.
Can E317 be formed, bent or molded?
Not a wrought product; the deposit is ductile (≈38 % elongation) and tolerates weld-repair peening and light straightening.
What is the maximum service temperature of E317?
E317 is rated for continuous use to about 760°C (1,400 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between E317-AW and E317-15?
AW is the default condition — default condition: properties of the undiluted deposit in the as-welded state, no post-weld heat treatment. E317-15: pick for the cleanest, lowest-oxygen deposit and best impact toughness on heavy or restrained joints; DC electrode positive only. Yield strength is 440 MPa in AW versus 450 MPa in E317-15.
How much does E317 cost?
E317 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
- AWS A5.4/A5.4M — Specification for Stainless Steel Electrodes for Shielded Metal Arc Welding — American Welding Society (2012)
- ASM Handbook Vol.6 — Welding, Brazing and Soldering — ASM International (1993)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels and High-Performance Alloys — ASM International (1990)
- Stainless SMAW electrode datasheets (317/317L type) — Böhler Welding / ESAB / Lincoln Electric (2023)
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.