Steel X82WMoCrV6-5-4
EN X82WMoCrV6-5-4 · GB W6Mo5Cr4V2
X82WMoCrV6-5-4 (1.3553) is a tungsten-molybdenum high-speed-steel composition equivalent to AISI M2 (W6Mo5Cr4V2, T11302), used as a high-temperature bearing and tool steel for its hot hardness and wear resistance.
Reference datasheet — X82WMoCrV6-5-4 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 A condition
X82WMoCrV6-5-4 tempers and conditions
X82WMoCrV6-5-4 is supplied in 6 conditions, soft to hard. A is the default FabDigit quotes; the values on this page are for it.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
ADefault Solution annealed | Standard as-delivered condition for machining, forging and blank preparation before hardening. | 550 | 880 | 12 | 250 HB | — |
Cold drawn / ground annealed bar | Choose for small-diameter precision bar and drill rod where tight tolerance and straightness are needed before hardening. | 700 | 950 | 8 | 26 HRC | 3.1 % IACS |
HT 60–62 HRC | Standard condition for high-temperature rolling bearings: austenitize ~1190–1210 °C, quench, temper 3× at 540–560 °C for dimensional stability to ~450 °C. | 2,000 | 2,300 | 1 | 61 HRC | — |
HT 64–66 HRC | Pick for maximum wear resistance and red hardness (cutting tools, hot-running rollers) where impact loading is low. | 2,050 | 2,300 | 0.3 | 65 HRC | 2.7 % IACS |
HT 62–64 HRC | Balanced hardness/toughness setting for rolling elements, punches and cutting tools with moderate shock. | 2,100 | 2,400 | 0.5 | 63 HRC | 2.8 % IACS |
HT + sub-zero | Use for precision bearings and gauges where retained austenite must be minimised for long-term dimensional stability. | 2,150 | 2,450 | 0.6 | 62 HRC | 2.8 % IACS |
What is X82WMoCrV6-5-4?
X82WMoCrV6-5-4 (1.3553) is a tungsten-molybdenum high-speed-steel composition equivalent to AISI M2 (W6Mo5Cr4V2, T11302), used as a high-temperature bearing and tool steel for its hot hardness and wear resistance. It is bought as annealed bar and rings near 250 HB (880 MPa tensile, 550 MPa yield, 12 % elongation) and heat treated to roughly 60–65 HRC in the HT60–HT64 conditions on file. Machinability is poor (score 35), corrosion resistance is low (score 18) so oil or coating is required, and the listed maximum service temperature is 300 °C. X75WCrV18-4-1 is the tungsten-rich alternative. X82WMoCrV6-5-4 has a density of 8.16 g/cm³ (0.295 lb/in³), heavier than 98% of steel grades. It melts at 1,260°C (2,300 °F). X82WMoCrV6-5-4 has a yield strength of 550 MPa (79.8 ksi) and a tensile strength of 880 MPa (128 ksi) — stronger than 71% of steel grades. Elongation at break is 12% and the elastic modulus is 217 GPa (31.5 Msi).
What is X82WMoCrV6-5-4 used for?
- High-temperature rolling bearings
- Aerospace and turbine bearing components
- Specialty tool and bearing hybrids
Advantages
- Polishes to a fine finish — 80/100, better than 97% of steel grades
Limitations
- Poor heat conductor — 21 W/m·K (12.1 BTU/hr·ft·°F), worse than 95% of steel grades
- Limited formability — 12/100, worse than 92% of steel grades
- High embodied carbon — 3.3 kg CO₂/kg, worse than 92% of steel grades
- Low electrical conductivity — 3.1 % IACS, worse than 89% of steel grades
- Limited ductility — 12%, worse than 84% of steel grades
X82WMoCrV6-5-4 properties
Typical room-temperature values for X82WMoCrV6-5-4-A; bars are the position among steel grades.
Physical3
X82WMoCrV6-5-4 has a density of 8.16 g/cm³ (0.295 lb/in³), heavier than 98% of steel grades. It melts at 1,260°C (2,300 °F).
Mechanical14
X82WMoCrV6-5-4 has a yield strength of 550 MPa (79.8 ksi) and a tensile strength of 880 MPa (128 ksi) — stronger than 71% of steel grades. Elongation at break is 12% and the elastic modulus is 217 GPa (31.5 Msi).
Thermal6
X82WMoCrV6-5-4 is rated for continuous service to 300°C (572 °F). It conducts heat at 21 W/m·K (12.1 BTU/hr·ft·°F), worse than 95% of steel grades. Thermal expansion is 11 µm/m·K (6.11 µin/in·°F).
Electrical3
X82WMoCrV6-5-4 conducts electricity at 3.1 % IACS, worse than 89% of steel grades.
Chemical & Environmental3
Corrosion resistance is poor (18/100), better than 83% of steel grades.
Sustainability4
Producing a kilogram of X82WMoCrV6-5-4 takes about 45 MJ of energy and emits 3.3 kg of CO₂ — more than 93% of steel grades. Typical recycled content is 35%.
Manufacturability6
X82WMoCrV6-5-4's machinability is fair (35/100, worse than 84% of steel grades); weldability poor (20/100); formability not recommended (12/100).
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. X82WMoCrV6-5-4 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with X82WMoCrV6-5-4
Is X82WMoCrV6-5-4 easy to machine?
Machine only in the annealed (≤269 HB) state with sharp, rigid setups — cobalt HSS or coated carbide, low speeds and heavy positive rake; hardened 60–65 HRC parts require CBN turning, creep-feed grinding or EDM.
Can X82WMoCrV6-5-4 be welded?
Not a structural weld material; repair welding needs 450–550 °C preheat, matching HSS/tool-steel filler, slow furnace cooling and full re-temper.
Can X82WMoCrV6-5-4 be formed, bent or molded?
Hot forge 1100 → 900 °C with slow furnace cooling to the annealed state; no meaningful cold forming — anneal 800–840 °C slow cool before any deformation.
X82WMoCrV6-5-4 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 | 0.78 – 0.88 | 0.82 |
| Si | 0.15 – 0.45 | 0.3 |
| Mn | 0.2 – 0.45 | 0.3 |
| P | ≤ 0.03 | |
| Smax; ≤0.015 for bearing quality | ≤ 0.03 | |
| Cr | 3.75 – 4.5 | 4.15 |
| Mo | 4.7 – 5.2 | 5 |
| W | 5.9 – 6.7 | 6.3 |
| V | 1.65 – 2.2 | 1.9 |
| Fe | balance |
What surface finishes work on X82WMoCrV6-5-4?
Not anodizable; protect with oil, phosphate or black oxide, or apply TiN/TiAlN/DLC PVD below the tempering temperature; hardened surfaces polish and lap to bearing-grade finishes.
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 X82WMoCrV6-5-4 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- 1.3553
- GB (China)
- W6Mo5Cr4V2
- Similar grades
- M2T11302
How much does X82WMoCrV6-5-4 cost?
X82WMoCrV6-5-4 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.
X82WMoCrV6-5-4 — frequently asked
What is X82WMoCrV6-5-4 used for?
X82WMoCrV6-5-4 is typically used for high-temperature rolling bearings, aerospace and turbine bearing components and specialty tool and bearing hybrids. In short: M2-type bearing steel; retains hardness when hot; very high wear resistance.
What is the yield strength of X82WMoCrV6-5-4?
X82WMoCrV6-5-4 has a typical yield strength of 550 MPa (79.8 ksi) and a tensile strength of 880 MPa (128 ksi) — stronger than 71% of steel grades. Strength varies by condition: see the 6 listed tempers.
Is X82WMoCrV6-5-4 easy to machine?
Not especially — machinability is rated fair (35/100, worse than 84% of steel grades). Machine only in the annealed (≤269 HB) state with sharp, rigid setups — cobalt HSS or coated carbide, low speeds and heavy positive rake; hardened 60–65 HRC parts require CBN turning, creep-feed grinding or EDM.
Can X82WMoCrV6-5-4 be welded?
Not readily — weldability is rated poor (20/100). Not a structural weld material; repair welding needs 450–550 °C preheat, matching HSS/tool-steel filler, slow furnace cooling and full re-temper.
What surface finishes work on X82WMoCrV6-5-4?
Not anodizable; protect with oil, phosphate or black oxide, or apply TiN/TiAlN/DLC PVD below the tempering temperature; hardened surfaces polish and lap to bearing-grade finishes.
Can X82WMoCrV6-5-4 be formed, bent or molded?
Hot forge 1100 → 900 °C with slow furnace cooling to the annealed state; no meaningful cold forming — anneal 800–840 °C slow cool before any deformation.
What is the maximum service temperature of X82WMoCrV6-5-4?
X82WMoCrV6-5-4 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 X82WMoCrV6-5-4-A and X82WMoCrV6-5-4 HT-SZ?
A is the default condition — standard as-delivered condition for machining, forging and blank preparation before hardening. HT-SZ: use for precision bearings and gauges where retained austenite must be minimised for long-term dimensional stability. Yield strength is 550 MPa in A versus 2,150 MPa in HT-SZ.
How much does X82WMoCrV6-5-4 cost?
X82WMoCrV6-5-4 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
- EN ISO 683-17 — Heat-treated steels, alloy steels and free-cutting steels — Part 17: Ball and roller bearing steels — ISO/CEN (2014)
- GB/T 9943 — (W6Mo5Cr4V2) — SAC (2008)
- ASTM A600 / AISI M2 high speed tool steel — ASTM (2016)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels and High-Performance Alloys (Tool Steels) — ASM International (1990)
- ASM Handbook Vol.16 — Machining (tool steel machinability ratings) — ASM International (1989)
- Böhler S600 / Erasteel ASP-M2 high speed steel data sheets — voestalpine Böhler Edelstahl / Erasteel (2021)
- W6Mo5Cr4V2 (Mysteel / 1688 ) — Mysteel / 1688 (2025)
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.