Steel SKH4 features:
| Competitive price |
| Immediate delivery |
| Premium quality |
| Reliable service |
Steel SKH4 size available:
Round Bar |
Diameter(mm) |
Length(mm) |
-- |
| 12~420 |
2000~6000 |
-- |
Flat Bar |
Thickness(mm) |
Width(mm) |
Length(mm) |
| 2~420 |
30~1500 |
2000~6000 |
Steel SKH4 process of production:
| Smelting process |
Technique |
Heat treatment |
| EAF+LF+VD+ESR |
Hot forged/ Hot rolled |
Annealed/Quenched&Tempered |
Steel SKH4 surface condition:
| Flat Bar |
Round Bar |
| Black surface/Milled surface |
Grinded surface/Peeled surface/Polished surface |
Steel SKH4 delivery condition:
| Hot rolled,Hot forged, Annealed, Quenched and Tempered ,or as your special requirements. |
Steel SKH4 specification:
| Packing details |
In seaworthy packing, or as your requirements. |
| Delivery details |
within 30-50 days. |
| Marking |
Grade, heat No. length will be stamped on each bar with required color. |
| Ultrasonic Test |
SEP 1921 D/d,or as your requirements. |
| Quality assurance |
ISO9001 certified, IQNet, CQC. |
Steel SKH4 applications:
| Steel SKH4 is used for making all kinds of complex high precision cutting tool, such as forming milling cutter, precision broach, etc, also can be used for precision of all kinds of high hardness, high toughness, wear-resistant metal cold punching die. |
Steel SKH4 chemical composition(%):
| C |
Si |
Mn |
P |
S |
Cr |
W |
V |
Co |
| 0.73~0.83 |
0.45max. |
0.40max. |
0.030max. |
0.030max. |
3.80~4.50 |
17.00~19.00 |
1.00~1.50 |
9.00~11.00 |
Steel SKH4 heat treatment & hardness of steel:
| Annealed hardness(HBW)& Annealed temperature(ºC) |
285 max,850 to 910 slow cooling |
| Quenched and tempered hardness(HRC) & Heat treatment temperature(ºC) |
64 min,Quenching:
1270 oil cooling,Tempering:560 air cooling |
Steel SKH4 introduction:
| 1.Steel SKH4 is of high working hardness. |
| 2.Steel SKH4 is of high wear hardness. |
| 3.Steel SKH4 is of excellent toughness . |
| 4.Steel SKH4 is of high retention of hardness and red hardness. |
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