Gang Saw Steel

Gang saw steel, also known as gangsaw steel or gang saw blade steel, refers to a type of high-quality steel used in the manufacturing of gang saw blades. Gang saw blades are large, multi-toothed saw blades that are used in the stone processing industry, sawing of marble, granite and other species of rocks for the building industry and other purposes. Up to 100 saw blades can be fitted in a single set-up. The demands made on stone sawing call for straight cuts, high cutting speed and maximum utilization of the expensive diamond-segmented saw blades. Baomit strip steel meets the demands made by saw blade manufacturers and consumers on the quality of the blade material.

ParametersRecommendation
Thickness ToleranceT3
RoughnessClass 3
FlatnessClass 3
SurfaceWhite Polished
EdgesSlit / deburred
Hardness41 – 45 HRC
Steel Grade75Cr1, 75Ni8, 8660

Baomit Strip Steel for Stone Gang Saw Blades

Our Advantages:

• Excellent fatigue resistance

• High productivity

• Precise thickness and width tolerances

• Maximum straightness deviation of 1 mm / 6 m

• Good surface finish

• Consistent, uniform microstructure

Steel Grades

Comparison of Norms
EU / ENUSA / AISIChemical Composition
75Cr1/C: 0.70-0.80, Si: 0.25-0.50, Mn: 0.60-0.80, P: max 0.025, S: max 0.025, Cr: 0.30-0.40
75Ni8/C: 0.72-0.78, Si: 0.15-0.35, Mn: 0.30-0.50, Ni: 1.80-2.10, P: max 0.025, S: max 0.025, Cr: max 0.15, Mo: max 0.10
/8660C: 0.56-0.64, Si: 0.15-0.35, Mn:  0.75-1.00, P: max 0.035, S: max 0.04, Cr: 0.40-0.60, Ni: 0.40-0.70, Mo: 0.15-0.25

Thickness Tolerances

Thickness (mm)Tolerances ± mm
T1T2T3T4T5
0.020 – 0.0400.0040.0030.002
0.040 – 0.1000.0060.0050.0040.0030.002
0.100 – 0.1250.0070.0050.0040.0030.002
0.125 – 0.1600.0090.0060.0050.0040.003
0.160 – 0.2000.0100.0070.0050.0040.003
0.200 – 0.2500.0110.0080.0060.0040.003
0.250 – 0.4000.0150.0110.0080.0060.004
0.400 – 0.6000.0200.0140.0100.0070.005
0.600 – 0.8000.0230.0170.0120.0080.006
0.800 – 1.0000.0270.0190.0130.0090.007
1.000 – 1.2500.0340.0240.0170.0120.008
1.250 – 1.6000.0390.0280.020
1.600 – 1.7500.0460.0330.023

Width Tolerances

Thickness (mm)Width (mm)Tolerances ± mm
W1W2W3
≤0.25≤500.100.070.05
50 – 1250.150.110.07
>1250.200.150.10
0.25 – 0.50≤500.150.110.07
50 – 1250.200.150.10
>1250.250.200.15
0.50 – 1.00≤500.200.150.10
50 – 1250.250.200.15
>1250.300.250.15
1.00 – 1.60≤500.200.150.10
50 – 1250.300.250.15
>1250.350.250.20
1.60 – 1.75≤500.300.200.15
50 – 1250.350.300.20
>1250.400.300.20

Surface Roughness

Available in white polished, blue polished and yellow.

Thickness (mm)Roughness
Class 1Class 2Class 3
≤0.50Ra≤ 0.30 µm
Rt≤ 3.00 µm
Ra≤0.25 µm
Rt≤ 2.50 µm
Ra≤ 0.20 µm
Rt≤ 2.00 µm
0.50 – 1.00Ra≤ 0.35 µm
Rt≤ 3.50 µm
Ra≤ 0.25 µm
Rt≤ 2.50 µm
Ra≤ 0.20 µm
Rt≤ 2.00 µm
1.00 – 1.75Ra≤ 0.40 µm
Rt≤ 4.00 µm
Ra≤ 0.30 µm
Rt≤ 3.00 µm
Ra≤ 0.30 µm
Rt≤ 3.00 µm

Flatness Deviation

Maximum flatness deviation per inch strip width.

Thickness (mm)Flatness Deviation
Class 1Class 2Class 3Class 4
0.02 – 0.10P60P50P40P30
0.10 – 0.25P50P40P30P20
0.25 – 0.50P40P30P20P10
0.50 – 1.75P35P25P15P10

Straightness Deviation

Strip Width (mm)Measured Length (3m)
Class 1Class 2Class 3
≤503 mm2 mm1 mm
50 – 1253 mm2 mm1 mm
>1253 mm2 mm1 mm

Hubei Baomit Steel Materials Co., Ltd.

China Verified Manufacturer of Hardened and Tempered (H & T) Strip Steel