Circular Saw Blade Steel
Circular saw blades are widely used for processing solid wood, plywood, MDF, and wood composites in different industries. Various blades are used to cut different types of material most effectively. As an experienced and certified supplier of special strip steel, Baomit is the perfect raw materials partner for global manufacturers who need to produce high quality, professional and cost-efficient circular saw blades.
| Parameters | Recommendation |
| Thickness Tolerance | T3 |
| Roughness | Class 3 |
| Flatness | Class 3 |
| Surface | Bright |
| Edges | Slit / deburred |
| Hardness | 44 – 47 HRC |
| Steel Grade | SK5, 75Cr1, 80CrV2, SKS51 |
Our Advantages:
• Excellent fatigue resistance
• Excellent punching and stamping properties
• 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 / EN | USA / AISI | JAPAN / JIC | Chemical 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 |
| 80CrV2 | / | / | C: 0.75-0.85, Si: 0.15-0.35, Mn: 0.30-0.50, Ni: max 0.40, P: max 0.025, S: max 0.025, Cr: 0.40-0.60, Mo: max 0.10, V: 0.15-0.25 |
| / | / | SKS51 | C: 0.75-0.85, Si: max 0.35, Mn: max 0.50, P: max 0.03, S: max 0.03, Cu: max 0.25, Ni: 1.3-2.0, Cr: 0.20-0.50 |
Thickness Tolerances
| Thickness (mm) | Tolerances ± mm | ||||
| T1 | T2 | T3 | T4 | T5 | |
| 0.020 – 0.040 | 0.004 | 0.003 | 0.002 | – | – |
| 0.040 – 0.100 | 0.006 | 0.005 | 0.004 | 0.003 | 0.002 |
| 0.100 – 0.125 | 0.007 | 0.005 | 0.004 | 0.003 | 0.002 |
| 0.125 – 0.160 | 0.009 | 0.006 | 0.005 | 0.004 | 0.003 |
| 0.160 – 0.200 | 0.010 | 0.007 | 0.005 | 0.004 | 0.003 |
| 0.200 – 0.250 | 0.011 | 0.008 | 0.006 | 0.004 | 0.003 |
| 0.250 – 0.400 | 0.015 | 0.011 | 0.008 | 0.006 | 0.004 |
| 0.400 – 0.600 | 0.020 | 0.014 | 0.010 | 0.007 | 0.005 |
| 0.600 – 0.800 | 0.023 | 0.017 | 0.012 | 0.008 | 0.006 |
| 0.800 – 1.000 | 0.027 | 0.019 | 0.013 | 0.009 | 0.007 |
| 1.000 – 1.250 | 0.034 | 0.024 | 0.017 | 0.012 | 0.008 |
| 1.250 – 1.600 | 0.039 | 0.028 | 0.020 | – | – |
| 1.600 – 1.750 | 0.046 | 0.033 | 0.023 | – | – |
Width Tolerances
| Thickness (mm) | Width (mm) | Tolerances ± mm | ||
| W1 | W2 | W3 | ||
| ≤0.25 | ≤50 | 0.10 | 0.07 | 0.05 |
| 50 – 125 | 0.15 | 0.11 | 0.07 | |
| >125 | 0.20 | 0.15 | 0.10 | |
| 0.25 – 0.50 | ≤50 | 0.15 | 0.11 | 0.07 |
| 50 – 125 | 0.20 | 0.15 | 0.10 | |
| >125 | 0.25 | 0.20 | 0.15 | |
| 0.50 – 1.00 | ≤50 | 0.20 | 0.15 | 0.10 |
| 50 – 125 | 0.25 | 0.20 | 0.15 | |
| >125 | 0.30 | 0.25 | 0.15 | |
| 1.00 – 1.60 | ≤50 | 0.20 | 0.15 | 0.10 |
| 50 – 125 | 0.30 | 0.25 | 0.15 | |
| >125 | 0.35 | 0.25 | 0.20 | |
| 1.60 – 1.75 | ≤50 | 0.30 | 0.20 | 0.15 |
| 50 – 125 | 0.35 | 0.30 | 0.20 | |
| >125 | 0.40 | 0.30 | 0.20 | |
Surface Roughness
Available in white polished, blue polished and yellow.
| Thickness (mm) | Roughness | ||
| Class 1 | Class 2 | Class 3 | |
| ≤0.50 | Ra≤ 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 – 1.00 | Ra≤ 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 – 1.75 | Ra≤ 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 1 | Class 2 | Class 3 | Class 4 | |
| 0.02 – 0.10 | P60 | P50 | P40 | P30 |
| 0.10 – 0.25 | P50 | P40 | P30 | P20 |
| 0.25 – 0.50 | P40 | P30 | P20 | P10 |
| 0.50 – 1.75 | P35 | P25 | P15 | P10 |
Straightness Deviation
| Strip Width (mm) | Measured Length (3m) | ||
| Class 1 | Class 2 | Class 3 | |
| ≤50 | 3 mm | 2 mm | 1 mm |
| 50 – 125 | 3 mm | 2 mm | 1 mm |
| >125 | 3 mm | 2 mm | 1 mm |
Hubei Baomit Steel Materials Co., Ltd.
ISO 9001: 2015 Certified Manufacturer of Hardened and Tempered (H & T) Strip Steel
