Steel 1.2510 · temper · default condition
Steel 1.2510 Annealed
Properties of the Annealed condition, compared with the other 1.2510 tempers.
Standard as-delivered condition for bar, plate and flat stock; machine to shape then harden.
What is 1.2510 Annealed?
1.2510 Annealed is 1.2510 in the Annealed temper — standard as-delivered condition for bar, plate and flat stock; machine to shape then harden. 1.2510 Annealed has a yield strength of 450 MPa (65.3 ksi) and a tensile strength of 750 MPa (109 ksi) — stronger than 53% of steel grades. Elongation at break is 15% and the elastic modulus is 210 GPa (30.5 Msi). 1.2510 Annealed has a density of 7.8 g/cm³ (0.282 lb/in³), lighter than 87% of steel grades. It melts at 1,350°C (2,462 °F).
Advantages
- Polishes to a fine finish — 78/100, better than 95% of steel grades
Limitations
- Limited service temperature — 200°C (392 °F), worse than 93% of steel grades
- Difficult to weld — 15/100, worse than 91% of steel grades
- High embodied carbon — 2.6 kg CO₂/kg, worse than 86% of steel grades
- Poor heat conductor — 33 W/m·K (19.1 BTU/hr·ft·°F), worse than 80% of steel grades
1.2510 Annealed properties
Typical room-temperature values for 1.2510 Annealed — 9 properties are specific to this condition; the rest are grade-level values shared by every 1.2510 temper. Each bar shows where the value sits among the steel grades in FabDigit's library — further right is higher.
Physical3
1.2510 Annealed has a density of 7.8 g/cm³ (0.282 lb/in³), lighter than 87% of steel grades. It melts at 1,350°C (2,462 °F).
Mechanical15
1.2510 Annealed has a yield strength of 450 MPa (65.3 ksi) and a tensile strength of 750 MPa (109 ksi) — stronger than 53% of steel grades. Elongation at break is 15% and the elastic modulus is 210 GPa (30.5 Msi).
Thermal6
1.2510 Annealed is rated for continuous service to 200°C (392 °F). It conducts heat at 33 W/m·K (19.1 BTU/hr·ft·°F), worse than 80% of steel grades. Thermal expansion is 11.5 µm/m·K (6.39 µin/in·°F).
Electrical3
1.2510 Annealed conducts electricity at 7 % IACS, worse than 74% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (12/100), worse than 53% of steel grades.
Sustainability4
Producing a kilogram of 1.2510 Annealed takes about 34 MJ of energy and emits 2.6 kg of CO₂ — more than 82% of steel grades. Typical recycled content is 35%.
Manufacturability8
1.2510 Annealed's machinability is fair (42/100, worse than 72% of steel grades); weldability poor (15/100); formability poor (30/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Other 1.2510 tempers and conditions
1.2510 is also supplied in 8 other conditions. The full side-by-side table is on the 1.2510 overview.
- AnnealedDefaultStandard as-delivered condition for bar, plate and flat stock; machine to shape then harden.450 MPa yield · 210 HB
- Q&T 62-64 HRCPeak hardness for gauges, knife edges and light-duty cutting tools; brittle, avoid impact or heavy sections.2,400 MPa tensile
- Q&T 60-62 HRCFor maximum wear resistance and edge holding in thin-stock blanking, knives and reamers, accepting lower toughness.2,000 MPa yield · 61 HRC
- Q&T 58-60 HRCMost common working hardness for blanking dies, gauges and woodworking tools — best wear/toughness balance.1,850 MPa yield · 59 HRC
- Q&T 56-58 HRCTougher setting for shear blades and impact-loaded punches where chipping is the main risk.1,700 MPa yield · 57 HRC
Working with 1.2510 Annealed
Is 1.2510 easy to machine?
Machine in the soft-annealed condition (~210 HB) with HSS or coated carbide; after hardening above 58 HRC only grinding, EDM or CBN cutting is practical.
Can 1.2510 be welded?
Poor weldability — repair welds only, with 300–400 °C preheat, matching low-alloy filler and immediate temper at the part's tempering temperature to avoid quench cracks.
Can 1.2510 be formed, bent or molded?
Cold forming limited to gentle bending of annealed thin stock; hot work at 850–1050 °C, then slow cool and soft anneal at 750–800 °C before machining.
What surface finishes work on 1.2510?
Takes a fine mirror polish when hardened; protect with oil, black oxide, phosphate or PVD coating since the alloy has no intrinsic corrosion resistance.
1.2510 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 | 0.9 – 1.05 | 0.95 |
| Si | 0.1 – 0.4 | 0.25 |
| Mn | 1 – 1.2 | 1.1 |
| Cr | 0.5 – 0.7 | 0.6 |
| W | 0.5 – 0.7 | 0.6 |
| Voptional in some standards | 0.05 – 0.15 | 0.1 |
| P | ≤ 0.03 | — |
| S | ≤ 0.03 | — |
| Fe | balance | — |
1.2510 Annealed — frequently asked
What is 1.2510 Annealed used for?
1.2510 Annealed is typically used for blanking and piercing dies, shear blades, gauges and measuring tools, taps and reamers, woodworking knives and punches and form tools. In short: workhorse oil-hardening tool.
What is the yield strength of 1.2510 Annealed?
1.2510 Annealed has a typical yield strength of 450 MPa (65.3 ksi) and a tensile strength of 750 MPa (109 ksi) — stronger than 53% of steel grades. Strength varies by condition: see the 9 listed tempers.
Is 1.2510 Annealed easy to machine?
Not especially — machinability is rated fair (42/100, worse than 72% of steel grades). Machine in the soft-annealed condition (~210 HB) with HSS or coated carbide; after hardening above 58 HRC only grinding, EDM or CBN cutting is practical.
Can 1.2510 Annealed be welded?
Not readily — weldability is rated poor (15/100). Poor weldability — repair welds only, with 300–400 °C preheat, matching low-alloy filler and immediate temper at the part's tempering temperature to avoid quench cracks.
What surface finishes work on 1.2510 Annealed?
Takes a fine mirror polish when hardened; protect with oil, black oxide, phosphate or PVD coating since the alloy has no intrinsic corrosion resistance.
Can 1.2510 Annealed be formed, bent or molded?
Cold forming limited to gentle bending of annealed thin stock; hot work at 850–1050 °C, then slow cool and soft anneal at 750–800 °C before machining.
What is the maximum service temperature of 1.2510 Annealed?
1.2510 Annealed is rated for continuous use to about 200°C (392 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Can FabDigit make parts in 1.2510 Annealed?
Yes — 1.2510 Annealed is available for CNC machining with instant online pricing. Upload a STEP file to get a price and a DFM check.
Sources
- EN ISO 4957 Tool steels (100MnCrW4, 1.2510) — ISO/CEN (2018)
- ASTM A681 Standard Specification for Tool Steels Alloy (O1) — ASTM (2015)
- GB/T 1299 (9CrWMn) — SAC (2014)
- Uddeholm Arne (O1 / 1.2510) datasheet — Uddeholm / voestalpine (2021)
- BÖHLER K460 cold work tool steel datasheet — voestalpine Böhler Edelstahl (2020)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels — ASM International (1990)
- ASM Handbook Vol.16 — Machining — ASM International (1989)
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.