VK10 OM (ВК10-ОМ)
Grade
GOST VK10 (ВК10) · GB YG10
Pick the 0.5–1 µm fine-grain version when higher hardness and a sharper cutting edge are needed for stainless steel and superalloy machining or precision punches.
Values for the OM condition
Other VK10 tempers and conditions
VK10 is listed in 3 conditions; see the grade overview at VK10.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
ВК10-ХОМ | Choose the high-purity fine-grain grade with Cr/V grain-growth inhibitors for tools and dies with the highest demands on wear resistance and resistance to plastic deformation. | — | 1,080 | 0.08 | 1,520 HV | 70 W/m·K |
OMThis page ВК10-ОМ | Pick the 0.5–1 µm fine-grain version when higher hardness and a sharper cutting edge are needed for stainless steel and superalloy machining or precision punches. | — | 1,120 | 0.09 | 1,450 HV | 72 W/m·K |
ВК10-КС | Use the 3–5 µm coarse-grain high-toughness version for rock-drill buttons, percussive tools and heavy descaling rolls where chipping resistance decides life. | — | 1,300 | 0.12 | 1,180 HV | 85 W/m·K |
What is VK10 OM?
VK10 OM is VK10 in the OM grade — pick the 0.5–1 µm fine-grain version when higher hardness and a sharper cutting edge are needed for stainless steel and superalloy machining or precision punches. VK10 OM has a tensile strength of 1,120 MPa (162 ksi), stronger than 90% of ceramic grades. Elongation at break is 0.09% and the elastic modulus is 585 GPa (84.8 Msi). VK10 OM has a density of 14.4 g/cm³ (0.52 lb/in³), heavier than 90% of ceramic grades. It melts at 1,320°C (2,408 °F).
Advantages
- Tough — resists crack growth — 11.5 MPa·√m (10.5 ksi·√in), better than 92% of ceramic grades
- Stiff — 585 GPa (84.8 Msi), better than 90% of ceramic grades
Limitations
- Heavy — 14.4 g/cm³ (0.52 lb/in³), worse than 90% of ceramic grades
- Needs corrosion protection — 47/100, worse than 85% of ceramic grades
VK10 OM properties
Typical room-temperature values for VK10 OM; 13 are specific to this condition. Other listed values are VK10 reference data and may not represent this condition. Bars are the position among ceramic grades.
Physical3
VK10 OM has a density of 14.4 g/cm³ (0.52 lb/in³), heavier than 90% of ceramic grades. It melts at 1,320°C (2,408 °F).
Mechanical13
VK10 OM has a tensile strength of 1,120 MPa (162 ksi), stronger than 90% of ceramic grades. Elongation at break is 0.09% and the elastic modulus is 585 GPa (84.8 Msi).
Thermal5
VK10 OM is rated for continuous service to 600°C (1,112 °F). It conducts heat at 72 W/m·K (41.6 BTU/hr·ft·°F), better than 71% of ceramic grades. Thermal expansion is 5.5 µm/m·K (3.06 µin/in·°F).
Electrical2
VK10 OM has an electrical resistivity of 2.2×10⁻⁷ Ω·m.
Chemical & Environmental2
Corrosion resistance is fair (47/100), worse than 85% of ceramic grades.
Sustainability3
Producing a kilogram of VK10 OM takes about 130 MJ of energy and emits 8.5 kg of CO₂ — more than 55% of ceramic grades. Typical recycled content is 30%.
Manufacturability3
VK10 OM's machinability is not recommended (4/100, worse than 85% of ceramic grades).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with VK10 OM
Is VK10 easy to machine?
After sintering, shape only by diamond wheel grinding, EDM or laser; pre-sintered blanks can be rough-turned with carbide tooling before final sintering.
Can VK10 be welded?
Not fusion weldable; braze to steel bodies with silver- or copper-based fillers (BAg-3, Cu-Zn-Ni) in vacuum or by induction, controlling cooling rate to prevent braze cracking.
Can VK10 be formed, bent or molded?
Powder metallurgy only: die pressing, isostatic pressing or extrusion followed by vacuum or low-pressure sinter-HIP at 1380–1460 °C, with about 18–22 % linear shrinkage.
What surface finishes work on VK10?
Diamond lapping and polishing reach Ra 0.02–0.05 µm; PVD (TiN/TiAlN/AlCrN) or CVD coatings can be applied after sandblasting and cobalt-removal pretreatment.
VK10 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 |
|---|---|---|
| Cobinder phase | 9.4 – 10.6 | 10 |
| C (free)free carbon, controlled to avoid η phase/graphite | ≤ 0.1 | 0.03 |
| Ta+Nbpermitted trace addition or impurity | ≤ 0.5 | 0.2 |
| Fe+Niimpurity | ≤ 0.3 | 0.1 |
| WCtungsten carbide hard phase, balance | balance | — |
VK10 OM — frequently asked
What is VK10 OM used for?
VK10 OM is typically used for cold heading tools, structural wear parts and mining bits. In short: toughest VK-series carbide; cold-forming tool grade; impact and shock duty.
What is the tensile strength of VK10 OM?
VK10 OM has a typical tensile strength of 1,120 MPa (162 ksi) — stronger than 90% of ceramic grades. Strength varies by condition: see the 3 listed tempers.
Is VK10 OM easy to machine?
Not especially — machinability is rated not recommended (4/100, worse than 85% of ceramic grades). After sintering, shape only by diamond wheel grinding, EDM or laser; pre-sintered blanks can be rough-turned with carbide tooling before final sintering.
Can VK10 OM be welded?
Not fusion weldable; braze to steel bodies with silver- or copper-based fillers (BAg-3, Cu-Zn-Ni) in vacuum or by induction, controlling cooling rate to prevent braze cracking.
What surface finishes work on VK10 OM?
Diamond lapping and polishing reach Ra 0.02–0.05 µm; PVD (TiN/TiAlN/AlCrN) or CVD coatings can be applied after sandblasting and cobalt-removal pretreatment.
Can VK10 OM be formed, bent or molded?
Powder metallurgy only: die pressing, isostatic pressing or extrusion followed by vacuum or low-pressure sinter-HIP at 1380–1460 °C, with about 18–22 % linear shrinkage.
What is the maximum service temperature of VK10 OM?
VK10 OM is rated for continuous use to about 600°C (1,112 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Sources
- ГОСТ 3882-74 Сплавы твердые спеченные. Марки — Госстандарт СССР (1974)
- ASM Handbook Vol. 2: Properties and Selection — Cemented Carbides — ASM International (1990)
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.