Steel W6Mo5Cr4V2 · temper · default condition
Steel W6Mo5Cr4V2 Annealed
Properties of the Annealed condition, compared with the other W6Mo5Cr4V2 tempers.
Standard as-delivered condition for machining tool blanks before hardening.
What is W6Mo5Cr4V2 Annealed?
W6Mo5Cr4V2 Annealed is W6Mo5Cr4V2 in the Annealed temper — standard as-delivered condition for machining tool blanks before hardening. W6Mo5Cr4V2 Annealed has a yield strength of 570 MPa (82.7 ksi) and a tensile strength of 850 MPa (123 ksi) — stronger than 74% of steel grades. Elongation at break is 12% and the elastic modulus is 217 GPa (31.5 Msi). W6Mo5Cr4V2 Annealed has a density of 8.16 g/cm³ (0.295 lb/in³), heavier than 97% of steel grades. It melts at 1,250°C (2,282 °F).
Advantages
- High service temperature — 500°C (932 °F), better than 90% of steel grades
- Polishes to a fine finish — 70/100, better than 87% of steel grades
Limitations
- High embodied carbon — 3.6 kg CO₂/kg, worse than 93% of steel grades
- Low fracture toughness — 45 MPa·√m (41 ksi·√in), worse than 90% of steel grades
- Poor heat conductor — 24 W/m·K (13.9 BTU/hr·ft·°F), worse than 90% of steel grades
- Low electrical conductivity — 3.1 % IACS, worse than 89% of steel grades
- Difficult to weld — 18/100, worse than 87% of steel grades
W6Mo5Cr4V2 Annealed properties
Typical room-temperature values for W6Mo5Cr4V2 Annealed — 11 properties are specific to this condition; the rest are grade-level values shared by every W6Mo5Cr4V2 temper. Each bar shows where the value sits among the steel grades in FabDigit's library — further right is higher.
Physical3
W6Mo5Cr4V2 Annealed has a density of 8.16 g/cm³ (0.295 lb/in³), heavier than 97% of steel grades. It melts at 1,250°C (2,282 °F).
Mechanical17
W6Mo5Cr4V2 Annealed has a yield strength of 570 MPa (82.7 ksi) and a tensile strength of 850 MPa (123 ksi) — stronger than 74% of steel grades. Elongation at break is 12% and the elastic modulus is 217 GPa (31.5 Msi).
Thermal6
W6Mo5Cr4V2 Annealed is rated for continuous service to 500°C (932 °F). It conducts heat at 24 W/m·K (13.9 BTU/hr·ft·°F), worse than 90% of steel grades. Thermal expansion is 10.1 µm/m·K (5.61 µin/in·°F).
Electrical3
W6Mo5Cr4V2 Annealed conducts electricity at 3.1 % IACS, worse than 89% of steel grades.
Chemical & Environmental2
Corrosion resistance is poor (18/100), better than 83% of steel grades.
Sustainability4
Producing a kilogram of W6Mo5Cr4V2 Annealed takes about 55 MJ of energy and emits 3.6 kg of CO₂ — more than 94% of steel grades. Typical recycled content is 40%.
Manufacturability8
W6Mo5Cr4V2 Annealed's machinability is fair (40/100, worse than 76% of steel grades); weldability poor (18/100); formability poor (15/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Other W6Mo5Cr4V2 tempers and conditions
W6Mo5Cr4V2 is also supplied in 6 other conditions. The full side-by-side table is on the W6Mo5Cr4V2 overview.
- AnnealedDefaultStandard as-delivered condition for machining tool blanks before hardening.570 MPa yield · 23 HRC
- Q&T 62-64 HRCThe normal working hardness for drills, taps, end mills and hobs — best balance of wear resistance and toughness.2,300 MPa tensile
- Q&T 60-62 HRCChoose for interrupted-cut or shock-loaded tooling — punches, shear blades, heavy-duty broaches — where toughness beats peak wear resistance.2,100 MPa tensile
- Q&T 64-66 HRCUse for high-wear finishing cutters and form tools with rigid, vibration-free cutting conditions; chipping risk is high.65 HRC
Working with W6Mo5Cr4V2 Annealed
Is W6Mo5Cr4V2 easy to machine?
Machine only in the annealed state with sharp carbide or cobalt-HSS tooling, rigid setups and flood coolant; hardened stock requires grinding, EDM or ceramic/CBN cutting.
Can W6Mo5Cr4V2 be welded?
Not a structural weld alloy — repair-weld with matched HSS filler, 500–550 °C preheat and immediate temper to avoid quench cracks.
Can W6Mo5Cr4V2 be formed, bent or molded?
Hot work 1100→900 °C with slow furnace cooling and mandatory soft anneal (840–870 °C, slow cool) afterwards; cold bending is impractical.
What surface finishes work on W6Mo5Cr4V2?
No anodising; use steam oxide, black oxide or phosphate for storage and anti-galling, nitriding for wear, and TiN/TiAlN PVD (≤500 °C) for cutting tools.
W6Mo5Cr4V2 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 |
|---|---|---|
| CGB/T 9943; 'C' variant of HS6-5-2 | 0.8 – 0.9 | 0.85 |
| Si | 0.2 – 0.45 | 0.3 |
| Mn | 0.15 – 0.4 | 0.3 |
| Cr | 3.8 – 4.4 | 4.1 |
| W | 5.5 – 6.75 | 6.2 |
| Mo | 4.5 – 5.5 | 5 |
| V | 1.75 – 2.2 | 1.95 |
| Coresidual, not intentionally added | ≤ 0.5 | — |
| Curesidual | ≤ 0.25 | — |
| P | ≤ 0.03 | — |
| SS-enhanced free-machining versions run higher | ≤ 0.03 | — |
| Fe | balance | — |
W6Mo5Cr4V2 Annealed — frequently asked
What is W6Mo5Cr4V2 Annealed used for?
W6Mo5Cr4V2 Annealed is typically used for twist drills, milling cutters and reamers. In short: workhorse high-speed tool.
What is the yield strength of W6Mo5Cr4V2 Annealed?
W6Mo5Cr4V2 Annealed has a typical yield strength of 570 MPa (82.7 ksi) and a tensile strength of 850 MPa (123 ksi) — stronger than 74% of steel grades. Strength varies by condition: see the 7 listed tempers.
Is W6Mo5Cr4V2 Annealed easy to machine?
Not especially — machinability is rated fair (40/100, worse than 76% of steel grades). Machine only in the annealed state with sharp carbide or cobalt-HSS tooling, rigid setups and flood coolant; hardened stock requires grinding, EDM or ceramic/CBN cutting.
Can W6Mo5Cr4V2 Annealed be welded?
Not readily — weldability is rated poor (18/100). Not a structural weld alloy — repair-weld with matched HSS filler, 500–550 °C preheat and immediate temper to avoid quench cracks.
What surface finishes work on W6Mo5Cr4V2 Annealed?
No anodising; use steam oxide, black oxide or phosphate for storage and anti-galling, nitriding for wear, and TiN/TiAlN PVD (≤500 °C) for cutting tools.
Can W6Mo5Cr4V2 Annealed be formed, bent or molded?
Hot work 1100→900 °C with slow furnace cooling and mandatory soft anneal (840–870 °C, slow cool) afterwards; cold bending is impractical.
What is the maximum service temperature of W6Mo5Cr4V2 Annealed?
W6Mo5Cr4V2 Annealed is rated for continuous use to about 500°C (932 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Can FabDigit make parts in W6Mo5Cr4V2 Annealed?
Yes — W6Mo5Cr4V2 Annealed is available for CNC machining with instant online pricing. Upload a STEP file to get a price and a DFM check.
Sources
- GB/T 9943 (High-speed tool steel bars) (2008)
- ASTM A600 — Tool Steel, High Speed (M2) — ASTM (2021)
- EN ISO 4957 — Tool steels (HS6-5-2C, 1.3343) — ISO/CEN (2018)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels, and High-Performance Alloys (High-Speed Steels) — ASM International (1990)
- HS6-5-2C / M2 high speed steel datasheet — Böhler / Erasteel / (2023)
- W6Mo5Cr4V2 (2026)
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.