Steel H14
AISI/SAE H14 · UNS T20814
H14 is a 5 % Cr, 5 % W chromium hot-work tool steel (UNS T20814) carrying more tungsten than H12 and H13, which raises hot hardness for more severe hot-working duty.
Reference datasheet — H14 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 ANN condition
H14 tempers and conditions
H14 is supplied in 5 conditions, soft to hard. ANN is the default FabDigit quotes; the values on this page are for it.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
ANNDefault Annealed | Standard mill supply state for rough machining of dies before hardening. | 450 | 760 | 20 | 215 HB | — |
Hardened & tempered 44–48 HRC | Pick for large hot-forging or hot-punching dies where impact toughness matters more than peak hot hardness. | 1,250 | 1,500 | 11 | 46 HRC | — |
Hardened & tempered 48–52 HRC | The usual finished hardness for hot-extrusion dies, mandrels and hot punches needing high red hardness. | 1,450 | 1,750 | 8 | 50 HRC | 28 W/m·K |
Hardened, tempered and nitrided surface | Choose when die surfaces must resist hot metal washing/soldering; core keeps 48–52 HRC properties. | 1,450 | 1,750 | 6 | 50 HRC | — |
Hardened & tempered 52–56 HRC | Use for small hot-extrusion tooling and punches where wear resistance dominates and shock loading is low. | 1,650 | 1,950 | 5 | 54 HRC | — |
What is H14?
H14 is a 5 % Cr, 5 % W chromium hot-work tool steel (UNS T20814) carrying more tungsten than H12 and H13, which raises hot hardness for more severe hot-working duty. Annealed bar is about 215 HB and 760 MPa tensile with a 210 GPa modulus, and the grade is quenched and tempered to 44–56 HRC or supplied nitrided. Machinability rates 45, hardened work must be ground, EDM'd or hard-turned with CBN, the maximum service temperature is about 480 °C and water cooling in service must be avoided. H13 is the alternative where thermal shock resistance matters more than hot hardness. H14 has a density of 7.8 g/cm³ (0.282 lb/in³), lighter than 87% of steel grades. It melts at 1,420°C (2,588 °F). H14 has a yield strength of 450 MPa (65.3 ksi) and a tensile strength of 760 MPa (110 ksi) — stronger than 52% of steel grades. Elongation at break is 20% and the elastic modulus is 210 GPa (30.5 Msi).
What is H14 used for?
- Extrusion dies
- Hot punches
- Piercing tools
- Forging die inserts
Advantages
- High service temperature — 480°C (896 °F), better than 88% of steel grades
- Polishes to a fine finish — 65/100, better than 78% of steel grades
Limitations
- Low electrical conductivity — 3.2 % IACS, worse than 87% of steel grades
- High embodied carbon — 2.6 kg CO₂/kg, worse than 87% of steel grades
- Poor heat conductor — 27 W/m·K (15.6 BTU/hr·ft·°F), worse than 86% of steel grades
H14 properties
Typical room-temperature values for H14-ANN; bars are the position among steel grades.
Physical3
H14 has a density of 7.8 g/cm³ (0.282 lb/in³), lighter than 87% of steel grades. It melts at 1,420°C (2,588 °F).
Mechanical15
H14 has a yield strength of 450 MPa (65.3 ksi) and a tensile strength of 760 MPa (110 ksi) — stronger than 52% of steel grades. Elongation at break is 20% and the elastic modulus is 210 GPa (30.5 Msi).
Thermal6
H14 is rated for continuous service to 480°C (896 °F). It conducts heat at 27 W/m·K (15.6 BTU/hr·ft·°F), worse than 86% of steel grades. Thermal expansion is 11.5 µm/m·K (6.39 µin/in·°F).
Electrical3
H14 conducts electricity at 3.2 % IACS, worse than 87% of steel grades.
Chemical & Environmental3
Corrosion resistance is poor (18/100), better than 83% of steel grades.
Sustainability4
Producing a kilogram of H14 takes about 36 MJ of energy and emits 2.6 kg of CO₂ — more than 89% of steel grades. Typical recycled content is 25%.
Manufacturability7
H14's machinability is fair (45/100, worse than 65% of steel grades); weldability poor (30/100); formability fair (35/100).
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 steel family
Yield strength against density for every steel grade FabDigit runs. H14 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with H14
Is H14 easy to machine?
Rough machine in the annealed condition (≈50% of AISI 1212) with rigid setups and sharp carbide; after hardening only grinding, EDM or hard-turning with CBN is practical.
Can H14 be welded?
Repair-weld only with matching hot-work filler, preheat 350–450 °C, keep interpass temperature, and re-temper immediately below the last tempering temperature.
Can H14 be formed, bent or molded?
Hot work at 1050–1150 °C with slow cooling and immediate annealing; harden from 1090–1200 °C, quench in oil/air/salt and double temper 550–650 °C — do not water-cool in service.
H14 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 | 0.35 – 0.45 | 0.4 |
| Mn | 0.2 – 0.5 | 0.35 |
| Si | 0.8 – 1.2 | 1 |
| Cr | 4.75 – 5.5 | 5.1 |
| W | 4 – 5.25 | 4.6 |
| Vresidual/optional in some producer variants | ≤ 0.3 | |
| Moresidual | ≤ 0.3 | |
| Niresidual | ≤ 0.3 | |
| P | ≤ 0.03 | |
| S | ≤ 0.03 | |
| Fe | balance |
What surface finishes work on H14?
Stress-relieve before finish machining; nitride, gas-nitrocarburize or PVD-coat die surfaces, and oil or phosphate for storage since the 5% Cr does not make it stainless.
Surface treatments FabDigit runs on 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).
Organic Coating
Black / Phosphate
Thermal Spray
Equivalent designations
Standards and trade names that resolve to Steel H14 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- T20814
How much does H14 cost?
H14 is a premium-cost steel ($$$), cheaper than about 51% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
H14 — frequently asked
What is H14 used for?
H14 is typically used for extrusion dies, hot punches, piercing tools and forging die inserts. In short: highest tungsten hot-work grade; more hot hardness than H12; for severe hot working.
What is the yield strength of H14?
H14 has a typical yield strength of 450 MPa (65.3 ksi) and a tensile strength of 760 MPa (110 ksi) — stronger than 52% of steel grades. Strength varies by condition: see the 5 listed tempers.
Is H14 easy to machine?
Reasonably — machinability is rated fair (45/100, worse than 65% of steel grades). Rough machine in the annealed condition (≈50% of AISI 1212) with rigid setups and sharp carbide; after hardening only grinding, EDM or hard-turning with CBN is practical.
Can H14 be welded?
Not readily — weldability is rated poor (30/100). Repair-weld only with matching hot-work filler, preheat 350–450 °C, keep interpass temperature, and re-temper immediately below the last tempering temperature.
What surface finishes work on H14?
Stress-relieve before finish machining; nitride, gas-nitrocarburize or PVD-coat die surfaces, and oil or phosphate for storage since the 5% Cr does not make it stainless.
Can H14 be formed, bent or molded?
Hot work at 1050–1150 °C with slow cooling and immediate annealing; harden from 1090–1200 °C, quench in oil/air/salt and double temper 550–650 °C — do not water-cool in service.
What is the maximum service temperature of H14?
H14 is rated for continuous use to about 480°C (896 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does H14 cost?
H14 is a premium-cost steel ($$$), cheaper than about 51% 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
- ASTM A681 — Standard Specification for Tool Steels Alloy — ASTM International (2022)
- ASM Handbook Vol. 1 — Properties and Selection: Irons, Steels, and High-Performance Alloys (Tool Steels) — ASM International (1990)
- Tool Steels, 5th ed. — ASM International (1998)
- ASM Handbook Vol. 16 — Machining — ASM International (1989)
- Hot-work tool steel product data (Cr-W grades) — Böhler / Voestalpine (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.