Stainless Steel 1.4362-HF
Grade
EN 1.4362 · UNS S32304 · ASTM A240 S32304 · GB 022Cr23Ni4N · also SAF 2304
HF = hot finished / forged then solution annealed bar & billet
Use for large-diameter bar, shafts, flanges and forgings where full toughness matters more than dimensional precision.
Values for the HF condition
Other 1.4362 tempers and conditions
1.4362 is listed in 4 conditions; see the grade overview at 1.4362.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
HFThis page Hot finished / forged then solution annealed bar & billet | Use for large-diameter bar, shafts, flanges and forgings where full toughness matters more than dimensional precision. | 440 | 670 | 30 | 19 HRC | 2.2 % IACS |
SADefault Solution (quench) annealed, ~950–1050 °C water quenched | Standard mill-supplied condition for plate, pipe and forgings; balanced 50/50 duplex structure with best corrosion resistance and toughness. | 460 | 700 | 32 | 230 HB | — |
Cold drawn | Choose for precision bar, fasteners and pump shafts needing higher strength and better surface/tolerance than hot finished bar. | 620 | 800 | 20 | 27 HRC | 2.2 % IACS |
Cold worked | Use where maximum strength and stiffness-per-section are wanted in thin sections; accept reduced ductility, higher springback and residual stress. | 700 | 900 | 14 | 31 HRC | 2.2 % IACS |
What is 1.4362-HF?
1.4362-HF is 1.4362 in the HF grade — use for large-diameter bar, shafts, flanges and forgings where full toughness matters more than dimensional precision. 1.4362-HF has a yield strength of 440 MPa (63.8 ksi) and a tensile strength of 670 MPa (97.2 ksi) — stronger than 68% of stainless steel grades. Elongation at break is 30% and the elastic modulus is 200 GPa (29 Msi). 1.4362-HF has a density of 7.75 g/cm³ (0.28 lb/in³), lighter than 65% of stainless steel grades. It melts at 1,385°C (2,525 °F). SA is the default condition FabDigit quotes; HF is available on request or by drawing note.
Limitations
- Limited service temperature — 300°C (572 °F), worse than 90% of stainless steel grades
1.4362-HF properties
Typical room-temperature values for 1.4362-HF; 23 are specific to this condition. Other listed values are 1.4362 reference data and may not represent this condition. Bars are the position among stainless steel grades.
Physical3
1.4362-HF has a density of 7.75 g/cm³ (0.28 lb/in³), lighter than 65% of stainless steel grades. It melts at 1,385°C (2,525 °F).
Mechanical16
1.4362-HF has a yield strength of 440 MPa (63.8 ksi) and a tensile strength of 670 MPa (97.2 ksi) — stronger than 68% of stainless steel grades. Elongation at break is 30% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
1.4362-HF is rated for continuous service to 300°C (572 °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 13 µm/m·K (7.22 µin/in·°F).
Electrical3
1.4362-HF conducts electricity at 2.2 % IACS, worse than 61% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is good (68/100), better than 63% of stainless steel grades.
Sustainability4
Producing a kilogram of 1.4362-HF takes about 48 MJ of energy and emits 4 kg of CO₂ — less than 85% of stainless steel grades. Typical recycled content is 70%.
Manufacturability6
1.4362-HF's machinability is poor (34/100, worse than 55% of stainless steel grades); weldability very good (72/100); formability fair (50/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 1.4362-HF
Is 1.4362 easy to machine?
Cuts like a strong austenitic but with ~2× the yield strength — use rigid setups, positive-rake coated carbide, low speed/high feed, generous coolant and avoid dwelling to prevent work hardening.
Can 1.4362 be welded?
Readily welded by GTAW/GMAW/SAW/FCAW with 2209-type over-alloyed filler (or 2304 filler with N-bearing shielding); keep heat input moderate, interpass <150 °C, no preheat, no post-weld heat treatment unless full re-solution annealing is possible.
Can 1.4362 be formed, bent or molded?
Cold forms well but needs roughly twice the press force of 304 with large springback; hot form 950–1150 °C followed by full solution anneal and quench — never finish-form in the 300–1000 °C range.
What surface finishes work on 1.4362?
Pickle and passivate after welding or hot work to restore the passive film; mechanically polishes to a satin/mirror finish, and it is not anodizable — protect against embedded carbon-steel contamination during handling.
1.4362 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 |
|---|---|---|
| CEN 10088 / ASTM A240 max | ≤ 0.03 | 0.02 |
| Si | ≤ 1 | 0.5 |
| Mn | ≤ 2 | 1.3 |
| PASTM allows 0.040 | ≤ 0.04 | — |
| SASTM allows 0.030 | ≤ 0.02 | — |
| CrASTM S32304: 21.5–24.5 | 22 – 24 | 23 |
| NiASTM S32304: 3.0–5.5 | 3.5 – 5.5 | 4.3 |
| Mo | 0.1 – 0.6 | 0.3 |
| Cu | 0.1 – 0.6 | 0.3 |
| N | 0.05 – 0.2 | 0.12 |
| Fe | balance | — |
1.4362-HF — frequently asked
What is 1.4362-HF used for?
1.4362-HF is typically used for pressure vessels, storage tanks, paper and pulp equipment and structural piping. In short: mid-range lean duplex; between 316L and 2205; good chloride SCC resistance.
What is the yield strength of 1.4362-HF?
1.4362-HF has a typical yield strength of 440 MPa (63.8 ksi) and a tensile strength of 670 MPa (97.2 ksi) — stronger than 68% of stainless steel grades. Strength varies by condition: see the 4 listed tempers.
Is 1.4362-HF easy to machine?
Not especially — machinability is rated poor (34/100, worse than 55% of stainless steel grades). Cuts like a strong austenitic but with ~2× the yield strength — use rigid setups, positive-rake coated carbide, low speed/high feed, generous coolant and avoid dwelling to prevent work hardening.
Can 1.4362-HF be welded?
Yes — weldability is rated very good (72/100). Readily welded by GTAW/GMAW/SAW/FCAW with 2209-type over-alloyed filler (or 2304 filler with N-bearing shielding); keep heat input moderate, interpass <150 °C, no preheat, no post-weld heat treatment unless full re-solution annealing is possible.
What surface finishes work on 1.4362-HF?
Pickle and passivate after welding or hot work to restore the passive film; mechanically polishes to a satin/mirror finish, and it is not anodizable — protect against embedded carbon-steel contamination during handling.
Can 1.4362-HF be formed, bent or molded?
Cold forms well but needs roughly twice the press force of 304 with large springback; hot form 950–1150 °C followed by full solution anneal and quench — never finish-form in the 300–1000 °C range.
What is the maximum service temperature of 1.4362-HF?
1.4362-HF is rated for continuous use to about 300°C (572 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 1.4362-SA and 1.4362-CW?
SA is the default condition — standard mill-supplied condition for plate, pipe and forgings; balanced 50/50 duplex structure with best corrosion resistance and toughness. CW: use where maximum strength and stiffness-per-section are wanted in thin sections; accept reduced ductility, higher springback and residual stress. Yield strength is 460 MPa in SA versus 700 MPa in CW.
Sources
- EN 10088-2/-3 — Stainless steels: sheet/plate and semi-finished products (1.4362) — CEN (2014)
- ASTM A240/A240M — Chromium and Chromium-Nickel Stainless Steel Plate, Sheet and Strip (S32304) — ASTM International (2023)
- ASTM A479 / A790 — Stainless bar and duplex pipe/tube (S32304) — ASTM International (2022)
- Sandvik SAF 2304 (UNS S32304) datasheet — Alleima (Sandvik Materials Technology) (2022)
- Outokumpu Duplex Stainless Steel data sheet / Corrosion Handbook — Outokumpu (2020)
- Practical Guidelines for the Fabrication of Duplex Stainless Steels, 3rd ed. — IMOA (2014)
- GB/T 4237 / GB/T 20878 (022Cr23Ni4N) — SAC (2015)
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.