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Circular saw

Circular saws possess strong cutting capabilities and are typically equipped with different types of blades to address various material cutting needs. Circular saws often have the ability for high-speed cutting, allowing for efficient handling of large workloads and increased production efficiency. Commonly used steel grades include SK85, SK95, 1085 steel, SKS51, and SKS5. These steel grades are among the most commonly used by users of high carbon steel and suppliers of carbon tool steel.

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Steel Grade & Chemical Composition
Hardness Conversion Table

Polish finish					Chemical Conposion (%)
JIS	Nippon steel	C	Si	Mn	P	S	Cu	Ni	Cr
S65C		0.60 ~ 0.70	0.15 ~ 0.35	0.60 ~ 0.90	≦0.030	≦0.035	≦0.30	≦0.20	≦0.20
SK85		0.80 ~ 0.90	0.10 ~ 0.35	0.10 ~ 0.50	≦0.030	≦0.035	≦0.30	≦0.20	≦0.20
SK95		0.90 ~ 1.00	0.10 ~ 0.35	0.10 ~ 0.50	≦0.030	≦0.035	≦0.25	≦0.25	≦0.30
SKS51		0.75 ~ 0.85	≦0.35	≦0.50	≦0.030	≦0.030	≦0.25	1.30 ~2.00	0.20 ~ 0.50
SKS5		0.75 ~ 0.85	≦0.35	≦0.50	≦0.030	≦0.030	≦0.25	0.70 ~ 1.30	0.20 ~ 0.50

Polish finish		Hardness		Tensile Strength(N/mm²)
JIS	Nippon steel	HV	HRC
S65C		320 ~ 560	33 ~ 53	1025 ~ 1950
SK85		340 ~ 580	34 ~ 54	1070 ~ 2020
SK95		340 ~ 580	34 ~ 54	1070 ~ 2020
SKS51		340 ~ 580	34 ~ 54	1070 ~ 2020
SKS5		340 ~ 580	34 ~ 54	1070 ~ 2020

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