High Strength Drill Stem For Mining Equipment
The High Strength Drill Stem For Mining Equipment is mainly made from high strength 4330VMOD material.

Mechanical behavior:
|
tensile strength |
≥ 1033Mpa ( T) ≥ 1033Mpa(L) |
|
Yield Strength |
≥ 964Mpa ( T) ≥ 964Mpa(L) |
|
Elongation |
≥ 10.7% ( T) ≥ 15% (L) |
|
Impact energy |
≥ 90J(T) ≥ 50J(L) |
|
Face shrink |
≥ 32% ( T) ≥ 45% (L) |
| hardness | 320-360HB |
Wear-resistant High Speed Mining Drill Stem
The Wear-resistant High Speed Mining Drill Stem is mainly used for Raise Boring which use high strength AISI4330VMOD for raw material.

Mechanical behavior:
|
tensile strength |
≥ 1033Mpa ( T) ≥ 1033Mpa(L) |
|
Yield Strength |
≥ 964Mpa ( T) ≥ 964Mpa(L) |
|
Elongation |
≥ 10.7% ( T) ≥ 15% (L) |
|
Impact energy |
≥ 90J(T) ≥ 50J(L) |
|
Face shrink |
≥ 32% ( T) ≥ 45% (L) |
|
hardness |
320-360HB |


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