| Steel Type | ZEICIN | GB/T 9943-2008 | JIS | ASTM | ERASTEEL | DIN | C | Si | Mn | Cr | W | Mo | V | Co |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Directional solidification of high speed steel | P30 | M36 | ASP2030 | 1.29 | 0.40 | 0.30 | 4.00 | 6.50 | 5.00 | 3.00 | 8.30 | |||
| P23 | M32 | ASP2023 | 1.28 | 0.40 | 0.30 | 4.20 | 6.40 | 5.00 | 3.10 | |||||
| W18 | W18Cr4V | SSKH2 | T1 | ET1 | 1.3355 | 0.73~0.83 | 0.20~0.40 | 0.10~0.40 | 3.80~4.50 | 17.20~18.70 | 1.00~1.20 | |||
| M35 | W6Mo5Cr4V2Co5 | SKH55 | M35 | EM35 | 1.3243 | 0.87~0.95 | 0.20~0.45 | 0.15~0.40 | 3.80~4.50 | 5.90~6.70 | 4.70~5.20 | 1.70~2.10 | 4.50~5.00 | |
| M35+V | 0.87~0.95 | 0.20~0.45 | 0.15~0.40 | 3.80~4.50 | 5.90~6.70 | 4.70~5.20 | 2.20~2.50 | 4.50~5.00 | ||||||
| M42 | W2Mo9Cr4VCo8 | SKH59 | M42 | EM42 | 1.3247 | 1.05~1.15 | 0.15~0.65 | 0.15~0.40 | 3.50~4.25 | 1.15~1.85 | 9.00~10.00 | 0.95~1.35 | 7.75~8.75 | |
| HSS | M2 | W6Mo5Cr4V2 | SKH51 | M2 | 1.3343 | 0.80~0.90 | 0.20~0.45 | 0.15~0.40 | 3.80~4.40 | 5.50~6.75 | 4.50~5.50 | 1.75~2.20 | ||
High-end quality for High speed steel
Professional production for the following HSS for high-end quality material of cutting tools
High Speed Steel P30
Normally be used for the product:
Quality Comparison
A well-known brand from Japan 
sample from one Korea customer
with no ESR Dia53mm for SKH51(M2)
Zeicin sample
EAF+LF+VD+RS ESR
Dia58mm for M2
Zeicin sample
IFF+LF+RS ESR
Dia60mm for M2
Carbide distirbution:grade 4.5
Carbide grain size:26μm
S:0.00112
Carbide distirbution:grade3.5
Carbide grain size:10μm
S≤0.001
Carbide distirbution:grade 3.5
Carbide grain size:12μm
0.001<S<0.03
France M35 dia76mm 100times
Carbide grain size:11 μm 
carbide distribution :4.5
France M35 dia76mm 500times
Carbide grain size:11 μm
carbide distribution :4.5
Zeicin M35 dia76mm 100times
Carbide grain size:9 μm
carbide distribution:4
Zeicin M35 dia76mm 500times
Carbide grain size:9 μm
carbide distribution:4
Japan M35 dia36mm 100times 
carbide size:16μm
carbide distribution:2-2.5
Japan M35 dia36mm 500times
carbide size:16μm
carbide distribution:2-2.5
Zeicin M35 dia37mm 100times
carbide size:7μm
carbide distribution:2.5
Zeicin M35 dia37mm 500times
carbide size:7μm
carbide distribution:2.5
A well-known brand from Austria
Sample dia80mm provided from our customer to comparison
Austria 
M35 dia80mm 100times
carbide grain size:14 μm
carbide distribution:4
Zeicin
M35 dia80mm 100times
carbide grain size:10 μm
carbide distribution:3
Japan
M35 dia70mm 100times
carbide grain size:12 μm
carbide distribution:4.5
Austria
M35 dia80mm 500times
carbide grain size:14 μm
carbide distribution:4
Zeicin
M35 dia80mm 500times
carbide grain size:10 μm
carbide distribution:3
Japan
M35 dia70mm 100times
carbide grain size:12 μm
carbide distribution:4.5
A well-known brand from Austria
Germany(D.B)sample
dia25mm for M35
dia16mm for M42
provided from our Korea
customer to comparison
Germany sample 
M35 dia25mm 100times
carbide grain size:15 μm
carbide distribution:3
Germany sample
M35 dia25mm 500times
carbide grain size:15 μm
carbide distribution:3
Zeicin sample
M35 dia30.2mm 100times
carbide grain size:9 μm
carbide distribution:2
Zeicin sample
M35 dia30.2mm 500times
carbide grain size:9 μm
carbide distribution:2
Germany sample
M42 dia16mm 100times
carbide grain size:23 μm
carbide distribution:2.5
Germany sample
M42 dia16mm 500times
carbide grain size:23 μm
carbide distribution:2.5
Zeicin sample
M42 dia20.2mm 100times
carbide grain size:8μm
carbide distribution:2
Zeicin sample
M42 dia20.2mm 500times
carbide grain size:8μm
carbide distribution:2
Below test report from one of our Korea customers , ZD (ZEICIN) VS Hitachi quality
Customer Feedback
ASTM A600-92a Standard Specification for Tool Steel High Speed