Avaliable specificiation:
DIN338 Standard
| GMA016-1 | HSS 4241,roll-forged, black |
| GMA016-2 | HSS 4241, half ground, bright |
| GMA016-3 | HSS 4241, half-ground, ti-coated |
| GMA016-4 | HSS 4241, fully ground, bright |
| GMA016-5 | HSS 4241, fully ground, ti-coated |
| GMA016-6 | HSS 6542, fully ground, bright |
| GMA016-7 | HSS 6542, fully ground, ti-coated |
| GMA016-8 | HSS M35, fully ground, amber |
170PCS DIN338 HSS Twist Drill Bit Set in Metal Case
Packing: metal box, color box or color sleeve are avaliable
size: 1.0-8.0 x 0.5mm x 10pcs + 8.5-10.0 x 0.5mm x 5pcs
Chemical Composition :
| Material | Component (%) |
| HSS 4241 | C (0.9~1.0); Si(1.0~1.3); Mn(0.25~0.4); P(0~0.035); S(0~0.009) |
| Cr(3.8~4.2); Mo(0.55~0.85); W(1.6~2.0); V (0.4~0.65); Co(0) | |
| HSS 4341 | C (0.83~0.93); Si(0.2~0.4); Mn(0.2~0.4); P(0~0.03); S(0~0.009) |
| Cr(3.8~4.4); Mo(2.5~3.5); W(3.5~4.5); V (1.2~1.8); Co(0) | |
| HSS 6542 (M2) | C (0.8~0.9); Si(0.2~0.45); Mn(0.15~0.4); P(0~0.03); S(0~0.009) |
| Cr(3.8~4.4); Mo(4.6~4.9); W(5.6~5.9); V(1.8~2.0); Co(0) | |
| HSS 9341 | C (0.77~0.87); Si(0.2~0.4); Mn(0.2~0.4); P(0~0.03); S(0~0.009) |
| Cr(3.8~4.4); Mo(2.7~3.3); W(8.5~9.5); V(1.3~1.7); Co(0) | |
| HSS M35 (Co5%) | C (0.8~0.9); Si(0.2~0.45); Mn(0.15~0.4); P(0~0.03); S(0~0.009) |
| Cr(3.8~4.4); Mo(4.6~4.9); W(5.6~5.9);V(1.8~2.0); Co(4.6~4.9) |
We do all kinds of professional cutting tools :
