Stainless Steel 314 Hot Rolled
Finish state
AISI/SAE 314 · UNS S31400 · EN 1.4841-like, 1.4841 · JIS SUS314
Economical condition for furnace fixtures and weldments that will be heat-treated or simply put into hot service without close tolerances.
Values for the Hot Rolled condition
Other 314 tempers and conditions
314 is listed in 4 conditions; see the grade overview at 314.
- Annealed
- Hot Rolled
- Solution Annealed
- Cold Drawn
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
mill annealed sheet/plate (softest condition) | Pick for sheet, strip and plate that must be formed or rolled into muffles and liners before installation. | 320 | 660 | 42 | 170 HB | 2 % IACS |
Hot RolledThis page as-rolled or hot-finished bar and plate | Economical condition for furnace fixtures and weldments that will be heat-treated or simply put into hot service without close tolerances. | 330 | 660 | 38 | 190 HB | 2 % IACS |
Solution AnnealedDefault 1050-1150 °C, rapid cool | Default stocked condition for bar, plate and forgings: carbides dissolved and rapidly cooled for maximum ductility before service at temperature. | 345 | 690 | 40 | 180 HB | — |
cold drawn bar / wire (lightly cold worked) | Choose when higher room-temperature strength, straightness and a bright dimensional finish are needed; cold work is lost on the first heat-up to service temperature. | 550 | 810 | 25 | 21 HRC | 2 % IACS |
What is 314 Hot Rolled?
314 Hot Rolled is 314 supplied in the Hot Rolled condition — economical condition for furnace fixtures and weldments that will be heat-treated or simply put into hot service without close tolerances. 314 Hot Rolled has a yield strength of 330 MPa (47.9 ksi) and a tensile strength of 660 MPa (95.7 ksi) — weaker than 57% of stainless steel grades. Elongation at break is 38% and the elastic modulus is 200 GPa (29 Msi). 314 Hot Rolled has a density of 7.72 g/cm³ (0.279 lb/in³), lighter than 72% of stainless steel grades. It melts at 1,400°C (2,552 °F). Solution Annealed is the default condition FabDigit quotes; Hot Rolled is available on request or by drawing note.
Advantages
- High service temperature — 1,100°C (2,012 °F), better than 96% of stainless steel grades
Limitations
- Hard to polish — 55/100, worse than 89% of stainless steel grades
- High embodied carbon — 5.8 kg CO₂/kg, worse than 86% of stainless steel grades
- Difficult to weld — 45/100, worse than 79% of stainless steel grades
- Low electrical conductivity — 2 % IACS, worse than 77% of stainless steel grades
314 Hot Rolled properties
Typical room-temperature values for 314 Hot Rolled; 22 are specific to this condition. Other listed values are 314 reference data and may not represent this condition. Bars are the position among stainless steel grades.
Physical3
314 Hot Rolled has a density of 7.72 g/cm³ (0.279 lb/in³), lighter than 72% of stainless steel grades. It melts at 1,400°C (2,552 °F).
Mechanical14
314 Hot Rolled has a yield strength of 330 MPa (47.9 ksi) and a tensile strength of 660 MPa (95.7 ksi) — weaker than 57% of stainless steel grades. Elongation at break is 38% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
314 Hot Rolled is rated for continuous service to 1,100°C (2,012 °F). It conducts heat at 17 W/m·K (9.82 BTU/hr·ft·°F), better than 71% of stainless steel grades. Thermal expansion is 15 µm/m·K (8.33 µin/in·°F).
Electrical3
314 Hot Rolled conducts electricity at 2 % IACS, worse than 77% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is good (64/100), better than 54% of stainless steel grades.
Sustainability4
Producing a kilogram of 314 Hot Rolled takes about 82 MJ of energy and emits 5.8 kg of CO₂ — more than 90% of stainless steel grades. Typical recycled content is 55%.
Manufacturability7
314 Hot Rolled's machinability is poor (28/100, worse than 79% of stainless steel grades); weldability fair (45/100); formability fair (50/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 314 Hot Rolled
Is 314 easy to machine?
Tough, gummy and strongly work-hardening — use rigid setups, positive-rake carbide, 15-25 m/min, heavy feeds, flood coolant and never dwell in the cut.
Can 314 be welded?
Weldable with GTAW/SMAW using 310 or 330 filler, but the high Si and high C raise hot-cracking and sigma risk — keep heat input low, no preheat, restrict interpass temperature and avoid heavy restraint.
Can 314 be formed, bent or molded?
Hot work at 1150-1200 °C and finish above 950 °C; cold forming needs high forces and generous radii, with a 1050-1150 °C solution anneal and rapid cool afterwards.
What surface finishes work on 314?
Pickle and passivate after fabrication to restore the oxide film; grind/polish to No.4 or bright finishes if needed — not anodisable, and plating is rarely used.
314 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 |
|---|---|---|
| Chigh C for creep strength | ≤ 0.25 | 0.15 |
| Sikey addition for scaling resistance | 1.5 – 3 | 2.2 |
| Mn | ≤ 2 | 1.2 |
| P | ≤ 0.05 | — |
| S | ≤ 0.03 | — |
| Cr | 23 – 26 | 24.5 |
| Ni | 19 – 22 | 20.5 |
| Febalance ≈ 50 % | balance | — |
314 Hot Rolled — frequently asked
What is 314 Hot Rolled used for?
314 Hot Rolled is typically used for heat treatment furnace fixtures, annealing baskets, carburizing furnace trays and grids, radiant tubes, burner and combustion-chamber parts and furnace conveyor links. In short: heat-resistant austenitic stainless.
What is the yield strength of 314 Hot Rolled?
314 Hot Rolled has a typical yield strength of 330 MPa (47.9 ksi) and a tensile strength of 660 MPa (95.7 ksi) — weaker than 57% of stainless steel grades. Strength varies by condition: see the 4 listed tempers.
Is 314 Hot Rolled easy to machine?
Not especially — machinability is rated poor (28/100, worse than 79% of stainless steel grades). Tough, gummy and strongly work-hardening — use rigid setups, positive-rake carbide, 15-25 m/min, heavy feeds, flood coolant and never dwell in the cut.
Can 314 Hot Rolled be welded?
With care — weldability is rated fair (45/100). Weldable with GTAW/SMAW using 310 or 330 filler, but the high Si and high C raise hot-cracking and sigma risk — keep heat input low, no preheat, restrict interpass temperature and avoid heavy restraint.
What surface finishes work on 314 Hot Rolled?
Pickle and passivate after fabrication to restore the oxide film; grind/polish to No.4 or bright finishes if needed — not anodisable, and plating is rarely used.
Can 314 Hot Rolled be formed, bent or molded?
Hot work at 1150-1200 °C and finish above 950 °C; cold forming needs high forces and generous radii, with a 1050-1150 °C solution anneal and rapid cool afterwards.
What is the maximum service temperature of 314 Hot Rolled?
314 Hot Rolled is rated for continuous use to about 1,100°C (2,012 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Can FabDigit make parts in 314 Hot Rolled?
Yes — 314 Hot Rolled 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 A276/A479 (UNS S31400 bar and shapes) — ASTM International (2023)
- ASTM A167 / A240 heat-resisting Cr-Ni sheet and plate — ASTM International (2020)
- EN 10095 — Heat resisting steels and nickel alloys (X15CrNiSi25-21, 1.4841) — CEN (2018)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- ASM Handbook Vol.13B — Corrosion: Materials — ASM International (2005)
- Machinery's Handbook (machinability ratings for austenitic stainless) — Industrial Press (2020)
- Heat-resistant stainless 1.4841 / 314 datasheet — Outokumpu / Sandvik (2022)
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.