48 grades · All classes
| Grade | Class | Hardness (HRA) | T.R.S. (kgf/mm²) |
|---|---|---|---|
| NF12 | Ultrafine | 350< | |
| NF15 | Ultrafine | 330< | |
| SF12 | Ultrafine | 320< | |
| SF13 | Ultrafine | 300< | |
| KF08 | Ultrafine | 300< | |
| KF10 | Ultrafine | 320< | |
| KF12 | Ultrafine | 330< | |
| KF13 | Ultrafine | 310< | |
| KF15 | Ultrafine | 330< | |
| FD15 | Fine | 300< | |
| K05S | Fine | 210< | |
| K10S | Fine | 230< | |
| K10C | Fine | 250< | |
| GF10 | Fine | 330< | |
| K30S | Fine | 290< | |
| G1 | Fine | 210< | |
| G2 | Fine | 250< | |
| GF20 | Fine | 330< | |
| GF25 | Medium | 300< | |
| GF30 | Medium | 330< | |
| G3 | Medium | 280< | |
| G4 | Medium | 290< | |
| G5 | Medium | 300< | |
| SX-5 | Medium | 290< | |
| SG6 | Medium | 280< | |
| SG7 | Coarse | 260< | |
| SM7 | Coarse | 270< | |
| SM8 | Coarse | 250< | |
| SM9 | Coarse | 250< | |
| M8 | Coarse | 250< | |
| M8NC | Coarse | 250< | |
| DR10 | Coarse | 250< | |
| DR20 | Coarse | 240< | |
| DR30 | Coarse | 220< | |
| DR35 | Coarse | 220< | |
| DR40 | Coarse | 220< | |
| DR25S | Extra coarse | 190< | |
| DR50S | Extra coarse | 200< | |
| DR60S | Extra coarse | 200< | |
| DR65S | Extra coarse | 180< | |
| E35S | Extra coarse | 180< | |
| E40S | Extra coarse | 180< | |
| E50S | Extra coarse | 190< | |
| SR10 | Coarse | 150< | |
| SR30 | Extra coarse | 150< | |
| KHR60 | Coarse | 220< | |
| NM40 | Medium | 300< | |
| NM20 | Fine | 270< |
Applications
Grade by use
G1 · G2 · G3Imprinting dies, plugs, nozzles, sizing cases, powder dies, cutters, drawing dies, boring tips
G4 · G5Mold material, mold punches, powder dies, imprinting dies, woodworking cutters
SG6 · SG7 · SM7Forging dies, imposed punches, ball dies, H.D
SM8 · M8 · SM9H.D, forging dies, punches, nut former plate top bolt, shock dies, guide rolls
SR10 · SR30Hot forging dies, punches
NM20 · NM40Nonmagnetic dies, nonmagnetic plugs, mechanical seals
K05S · K10S · G1 · G2 · G3 · GF10 · KF13Casting, aluminum, free-cutting steel, burnishing drills, reamers, knives requiring abrasion resistance to fiber
GF10 · KF13 · SF13 · KF10 · KF12Burnishing drills, drills and end mills for steel, stencil, cast steel and ductile iron
SF13 · KF10 · KF13 · KF15Cutters, saws and knives for corrugated board, rubber rolls, synthetic resins and alloy steel
KHR60Press rolls
SM8 · M8Guide rolls
G2 · G3 · G4 · G5 · K10SDies
DR10 ~ DR70SMining industry
Not sure which grade? We will advise you.
Contact usHow are the 48 carbide grades classified?
Grades are grouped by the maximum WC grain size: Ultrafine up to 0.8 µm, Fine up to 1.6 µm, Medium up to 3.5 µm, Coarse up to 10 µm, and Extra coarse above 10 µm.
What do HRA and T.R.S. mean in the grade chart?
HRA is Rockwell A hardness. T.R.S. is transverse rupture strength, listed in kgf/mm². The chart shows each grade’s hardness range and strength specification; contact DH PRECISION for advice on your application.
How do I choose a tungsten carbide grade?
Review the grade specifications and the Grade by use application list, then contact DH PRECISION with your application and tool requirements for grade selection advice.