Steel W6Mo5Cr4V2 Annealed
Temper · default condition
AISI/SAE M2 · EN X82WMoCrV6-5-4
Standard as-delivered condition for machining tool blanks before hardening.
Values for the Annealed condition
Other W6Mo5Cr4V2 tempers and conditions
W6Mo5Cr4V2 is listed in 6 conditions; see the grade overview at W6Mo5Cr4V2.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Salt-bath/vacuum hardened at upper austenitising range, low-temper | Use for high-wear finishing cutters and form tools with rigid, vibration-free cutting conditions; chipping risk is high. | 65 HRC | — | |||
AnnealedDefaultThis page soft annealed (spheroidised) bar, plate or forging stock | Standard as-delivered condition for machining tool blanks before hardening. | 570 | 850 | 12 | 23 HRC | — |
annealed and cold-drawn bright bar / wire | Pick for small-diameter precision blanks (tap, drill, wire) where a bright, close-tolerance surface saves grinding. | 780 | 980 | 6 | 30 HRC | 3 % IACS |
Hardened 1200–1220 °C, triple tempered ~560–580 °C | Choose for interrupted-cut or shock-loaded tooling — punches, shear blades, heavy-duty broaches — where toughness beats peak wear resistance. | 2,100 | 1 | 61 HRC | — | |
Hardened/tempered core plus gas or plasma nitrided case | Pick when abrasive wear or galling on gear hobs, taps and forming rolls must be reduced without changing core toughness. | 2,100 | 2,350 | 0.5 | 63 HRC | 2.9 % IACS |
Hardened 1210–1230 °C, triple tempered ~550–560 °C | The normal working hardness for drills, taps, end mills and hobs — best balance of wear resistance and toughness. | 2,300 | 0.5 | 63 HRC | 21 W/m·K |
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 98% 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 94% 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 are specific to this condition. Other listed values are W6Mo5Cr4V2 reference data and may not represent this condition. Bars are the position among steel grades.
Physical3
W6Mo5Cr4V2 Annealed has a density of 8.16 g/cm³ (0.295 lb/in³), heavier than 98% 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 77% of steel grades); weldability poor (18/100); formability poor (15/100).
Common Calculations5
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
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 6 listed tempers.
Is W6Mo5Cr4V2 Annealed easy to machine?
Not especially — machinability is rated fair (40/100, worse than 77% 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; every part is priced by an engineer rather than instantly. 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.