High Speed Alloy Tool Steel Bar (M35/W6MoCr4V2Co5/1.3243/SKH35)
Features: (1),For tungsten molybdenum containing cobalt high speed steel, improve the red hardness and high temperature hardness; (2),Improved wear resistance, good machinability, but lower strength and impact toughness, easy oxidation decarburization; (3),Commonly used for gear cutting tools, milling tools and tools such as punch, cutter for cutting hard material;
Application: (1)Has good machinability, but lower strength and impact toughness; (2)easy oxidation decarburization, commonly used for gear cutting tools, milling tools and tools such as punch,; (3)cutter for cutting hard material;
Chemical composition %:
C
Si
Mn
S
P
Cr
Ni
Cu
V
Mo
W
Co
0.80~0.90
0.20~0.45
0.15~0.40
≤0.030
≤0.030
3.75~4.50
≤0.30
≤0.25
1.75~2.25
4.50~5.50
5.50~6.50
4.50~5.50
Size:Flat Bars(mm): Thickness:20-400 Width:200-800 Length:1000~6000 Round Bar (mm):Φ20~400
Mechanical property: Hardness:≥64HRC
Heat treatment Preheat:1190~1210ºC or 1200~1220ºC heating,oil cooling:540~560ºC Tempering:Twice,2hours each time.
Quality Contation of our steel products 1)Both end of each bar must be cut 2)Ladle furnanced and vacuum de-gassed 3)Show heat No. on each bar 4)Surface condition the surface of the hot rolled square bar shall befree cracks, scar and wrinkles that affect the use of the billets. In case there is the above-mentioned defect, it shall be remove. 5)The mill test certificate shall show the chemical composition, and it is guaranteed that the chemical composition shall be within the limit stipulated in the contract.