Stainless Steel 316LN CW 1/8 Hard
Supply condition
AISI/SAE 316LN · UNS S31653 · EN 1.4406, X2CrNiMoN17-11-2 · JIS SUS316LN · GB 022Cr17Ni12Mo2N
CW 1/8 Hard = cold Worked 1/8 Hard
Modest cold work for springy sheet parts and structural panels still needing bending.
Values for the CW 1/8 Hard condition
Other 316LN tempers and conditions
316LN is listed in 8 conditions; see the grade overview at 316LN.
Compare all 8 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
mill-annealed bar / sheet (softest commercial condition) | Pick for maximum ductility in deep drawing, bending or when re-heat-treatment after forming is not planned. | 300 | 590 | 50 | 155 HB | 2.3 % IACS |
hot rolled/forged then solution annealed and descaled bar or plate | Economical condition for heavy bar, flanges and forgings where surface finish and tight tolerance are not critical. | 310 | 600 | 45 | 170 HB | 2.3 % IACS |
Solution AnnealedDefault 1020–1120 °C, rapid cooled (AT / condition A) | Default supply condition for plate, pipe, forgings and pressure parts; maximum corrosion resistance and toughness. | 320 | 610 | 48 | 165 HB | — |
Cold Worked 1/16 Hard | Lightly temper-rolled strip/sheet for slightly higher yield with almost full formability. | 350 | 650 | 40 | 195 HB | 2.3 % IACS |
CW 1/8 HardThis page Cold Worked 1/8 Hard | Modest cold work for springy sheet parts and structural panels still needing bending. | 420 | 720 | 32 | 215 HB | 2.3 % IACS |
cold-finished bar/wire (light cold work, as-drawn) | Choose for straight, close-tolerance bar with ~50 % higher yield strength and better machined finish than annealed. | 520 | 720 | 28 | 220 HB | — |
Cold Worked 1/4 Hard | Use where a high yield strength sheet is needed and forming is limited to gentle radii. | 570 | 900 | 15 | 25 HRC | 2.2 % IACS |
Cold Worked 1/2 Hard | Highest standard cold-rolled level: for flat springs, clamps and load-bearing strip with no significant forming. | 810 | 1,080 | 10 | 32 HRC | 2.2 % IACS |
What is 316LN CW 1/8 Hard?
316LN CW 1/8 Hard is 316LN supplied in the CW 1/8 Hard condition — modest cold work for springy sheet parts and structural panels still needing bending. 316LN CW 1/8 Hard has a yield strength of 420 MPa (60.9 ksi) and a tensile strength of 720 MPa (104 ksi) — stronger than 64% of stainless steel grades. Elongation at break is 32% and the elastic modulus is 196 GPa (28.4 Msi). 316LN CW 1/8 Hard has a density of 8 g/cm³ (0.289 lb/in³), heavier than 92% of stainless steel grades. It melts at 1,390°C (2,534 °F). Solution Annealed is the default condition FabDigit quotes; CW 1/8 Hard is available on request or by drawing note.
Advantages
- Polishes to a fine finish — 82/100, better than 95% of stainless steel grades
- Readily welded — 82/100, better than 84% of stainless steel grades
Limitations
- Limited service temperature — 400°C (752 °F), worse than 78% of stainless steel grades
316LN CW 1/8 Hard properties
Typical room-temperature values for 316LN CW 1/8 Hard; 23 are specific to this condition. Other listed values are 316LN reference data and may not represent this condition. Bars are the position among stainless steel grades.
Physical3
316LN CW 1/8 Hard has a density of 8 g/cm³ (0.289 lb/in³), heavier than 92% of stainless steel grades. It melts at 1,390°C (2,534 °F).
Mechanical16
316LN CW 1/8 Hard has a yield strength of 420 MPa (60.9 ksi) and a tensile strength of 720 MPa (104 ksi) — stronger than 64% of stainless steel grades. Elongation at break is 32% and the elastic modulus is 196 GPa (28.4 Msi).
Thermal6
316LN CW 1/8 Hard is rated for continuous service to 400°C (752 °F). It conducts heat at 14.5 W/m·K (8.38 BTU/hr·ft·°F), worse than 72% of stainless steel grades. Thermal expansion is 16 µm/m·K (8.89 µin/in·°F).
Electrical3
316LN CW 1/8 Hard conducts electricity at 2.3 % IACS, better than 55% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is very good (70/100), better than 68% of stainless steel grades.
Sustainability4
Producing a kilogram of 316LN CW 1/8 Hard takes about 78 MJ of energy and emits 5.2 kg of CO₂ — more than 87% of stainless steel grades. Typical recycled content is 65%.
Manufacturability6
316LN CW 1/8 Hard's machinability is fair (42/100, better than 79% of stainless steel grades); weldability very good (82/100); formability good (62/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 316LN CW 1/8 Hard
Is 316LN easy to machine?
Gummy and work-hardening: use rigid setups, positive-rake sharp coated carbide, heavy constant feed, no dwell, and flood coolant; expect ~30 % of 1212 speeds.
Can 316LN be welded?
Excellent by GTAW/GMAW/SMAW/SAW with 316L or 316LMn filler; no pre- or post-weld heat treatment needed, keep heat input moderate and interpass low to avoid ferrite/sigma issues, back-purge with argon.
Can 316LN be formed, bent or molded?
Cold forms well but work-hardens fast — allow ~30–40 % higher press loads than 316L, generous radii, and interstage annealing at 1050 °C for severe draws; hot work 1150–900 °C.
What surface finishes work on 316LN?
Pickle and passivate after welding or heavy grinding to restore the passive film; takes fine mechanical and electropolished finishes readily (No.4, 2B, BA); not anodizable, plating rarely needed.
316LN 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 |
|---|---|---|
| Cextra-low carbon, resists sensitisation | ≤ 0.03 | 0.02 |
| Si1.00 max in some EN product forms | ≤ 0.75 | 0.5 |
| Mn | ≤ 2 | 1.5 |
| P | ≤ 0.05 | 0.03 |
| S | ≤ 0.03 | 0.01 |
| Cr | 16 – 18 | 17 |
| Ni | 10 – 14 | 12 |
| Mo | 2 – 3 | 2.5 |
| Nthe defining addition; EN 1.4406 spec 0.12–0.22 % | 0.1 – 0.16 | 0.14 |
| Fe | balance | — |
316LN CW 1/8 Hard — frequently asked
What is 316LN CW 1/8 Hard used for?
316LN CW 1/8 Hard is typically used for cryogenic pressure vessels, LNG terminal piping and storage tanks, chemical process pressure vessel shells, heat exchanger and condenser tubing, marine and offshore structural fittings and pump and valve bodies for corrosive duty. In short: nitrogen-strengthened 316L.
What is the yield strength of 316LN CW 1/8 Hard?
316LN CW 1/8 Hard has a typical yield strength of 420 MPa (60.9 ksi) and a tensile strength of 720 MPa (104 ksi) — stronger than 64% of stainless steel grades. Strength varies by condition: see the 8 listed tempers.
Is 316LN CW 1/8 Hard easy to machine?
Not especially — machinability is rated fair (42/100, better than 79% of stainless steel grades). Gummy and work-hardening: use rigid setups, positive-rake sharp coated carbide, heavy constant feed, no dwell, and flood coolant; expect ~30 % of 1212 speeds.
Can 316LN CW 1/8 Hard be welded?
Yes — weldability is rated very good (82/100). Excellent by GTAW/GMAW/SMAW/SAW with 316L or 316LMn filler; no pre- or post-weld heat treatment needed, keep heat input moderate and interpass low to avoid ferrite/sigma issues, back-purge with argon.
What surface finishes work on 316LN CW 1/8 Hard?
Pickle and passivate after welding or heavy grinding to restore the passive film; takes fine mechanical and electropolished finishes readily (No.4, 2B, BA); not anodizable, plating rarely needed.
Can 316LN CW 1/8 Hard be formed, bent or molded?
Cold forms well but work-hardens fast — allow ~30–40 % higher press loads than 316L, generous radii, and interstage annealing at 1050 °C for severe draws; hot work 1150–900 °C.
What is the maximum service temperature of 316LN CW 1/8 Hard?
316LN CW 1/8 Hard is rated for continuous use to about 400°C (752 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Can FabDigit make parts in 316LN CW 1/8 Hard?
Yes — 316LN CW 1/8 Hard is available for CNC machining and sheet metal; every part is priced by an engineer rather than instantly. Upload a STEP file to get a price and a DFM check.
Sources
- ASTM A240/A240M — Cr and Cr-Ni Stainless Steel Plate, Sheet and Strip (S31653) — ASTM International (2023)
- ASTM A479/A479M and A276 — Stainless Steel Bars for Boiler and Pressure Vessel Use — ASTM International (2022)
- ASTM A666 — Annealed or Cold-Worked Austenitic Stainless Steel Sheet, Strip, Plate and Flat Bar — ASTM International (2015)
- EN 10088-1/-2/-3 — Stainless steels, grade 1.4406 (X2CrNiMoN17-11-2) — CEN (2014)
- GB/T 24511 / GB/T 1220 — (022Cr17Ni12Mo2N) — SAC (2017)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- Outokumpu Supra 316L/4404 & 4406 data sheet — Outokumpu (2023)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.