Cr+Mo dual-alloy steel strip purpose-built for North American band saw blades. Imperial dimensions in stock. Tensile strength up to 1,200 N/mm² for demanding hardwood cutting.
Get Quote for 42CrMo4 View Specs ↓42CrMo4 (AISI 4140) is a chromium-molybdenum alloy steel that delivers superior toughness and fatigue life compared to plain carbon grades. The Mo addition enhances high-temperature stability and resists softening during heavy cutting loads.
Our 42CrMo4 strip dimensions are optimized for the most popular 14" band saws in North American workshops.
Delta 28-150 and 28-400 series. Accepts 93-1/2" blade length, 1/8" to 3/4" width. Our 0.042" thickness is the factory-recommended gauge.
Jet JWBS-14DXPRO and JWBS-14SFX. Premium cast-iron frame machines. 42CrMo4 toughness handles the higher tension these saws can apply.
Powermatic PM1500 series. Top-tier American workshop saw. The Cr-Mo alloy resists fatigue at the higher blade speeds these machines run.
Grizzly G0555 and G0555LX. Best-selling value 14" saw. 42CrMo4 provides a meaningful upgrade over the plain carbon stock blades.
42CrMo4 combines chromium for hardenability with molybdenum for fatigue resistance and temper stability. The dual-alloy system provides properties that plain carbon steel cannot match.
| C % | Si % | Mn % | Cr % | Ni % | Mo % |
|---|---|---|---|---|---|
| 0.38–0.45 | 0.15–0.40 | 0.60–1.00 | 0.90–1.20 | — | 0.15–0.25 |
Precision cold-rolled to EN 10083-3. Consistent thickness is critical for blade tracking on 14" saws.
| Thickness (mm) | T1 | T2 | T3 | T4 | T5 |
|---|---|---|---|---|---|
| 0.020–0.040 | ±0.002 | ±0.003 | ±0.004 | ±0.005 | ±0.008 |
| 0.040–0.080 | ±0.003 | ±0.004 | ±0.006 | ±0.008 | ±0.012 |
| 0.080–0.150 | ±0.004 | ±0.006 | ±0.008 | ±0.012 | ±0.018 |
| 0.150–0.300 | ±0.005 | ±0.008 | ±0.012 | ±0.016 | ±0.024 |
| 0.300–0.600 | ±0.008 | ±0.012 | ±0.016 | ±0.024 | ±0.035 |
| 0.600–1.000 | ±0.010 | ±0.016 | ±0.022 | ±0.030 | ±0.040 |
| 1.000–1.600 | ±0.014 | ±0.020 | ±0.028 | ±0.036 | ±0.050 |
| 1.600–2.500 | ±0.018 | ±0.026 | ±0.035 | ±0.045 | ±0.060 |
| Width (mm) | W1 | W2 | W3 |
|---|---|---|---|
| ≤ 25 | ±0.05 | ±0.10 | ±0.15 |
| 25–50 | ±0.08 | ±0.15 | ±0.25 |
| 50–100 | ±0.10 | ±0.20 | ±0.35 |
| 100–200 | ±0.15 | ±0.30 | ±0.50 |
| 200–300 | ±0.20 | ±0.40 | ±0.60 |
High-strength alloy steel for applications demanding toughness and fatigue resistance beyond what carbon steel delivers.
Purpose-built for the US and Canadian market. Imperial dimensions match Delta, Jet, Powermatic, and Grizzly 14" saws. Superior hardwood cutting performance vs plain carbon blades.
Cr-Mo alloy provides exceptional fatigue life as backing material. Tensile up to 1,200 N/mm² allows thinner gauges without sacrificing blade stiffness.
The higher toughness and heat resistance of 42CrMo4 prevents premature tooth dulling in dense hardwoods like maple, oak, walnut, and tropical species.
42CrMo4 is the upgrade path for woodworkers who demand more from their blades. The Cr-Mo alloy system outperforms plain carbon on every durability metric.
Verdict: C75S is the economy choice. 42CrMo4 is for woodworkers and blade manufacturers who value blade life and cutting quality over raw material cost. The Cr-Mo alloy particularly shines in hardwood and heavy-duty resawing.
Imperial and metric dimensions. Factory direct with heat treatment to your specification.
Explore other steel strip grades for different cutting applications and market requirements.
The standard for wood band saw blade steel. Chromium-alloyed carbon steel with 30%+ wear improvement. Lower cost alternative for general woodworking.
Japanese carbon tool steel at 60–63 HRC. Maximum tooth hardness for dense hardwood cutting where edge retention is the priority.
The bi-metal band saw backing standard. Nickel-alloyed for superior fatigue resistance in metal-cutting applications.
Imperial or metric specs. Tell us your dimensions, hardness, and quantity. We respond within 24 hours.