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Category Overview

Hardened Steel Strip — Heat Treated Precision Strip Steel

Precision hardened and tempered steel strip for cutting tools, springs, and industrial applications. Factory direct with in-house heat treatment and ±0.5 HRC hardness control.

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Overview

What Is Hardened Steel Strip?

Hardened steel strip is precision cold-rolled flat steel that has been through a controlled heat treatment process — quenching and tempering — to achieve a target hardness and microstructure. Unlike raw cold-rolled strip, hardened strip delivers consistent mechanical properties across the entire coil: uniform hardness, controlled flatness, and predictable spring-back behavior.

This makes it the material of choice for manufacturers of band saw blades, industrial knives, die cutting rules, doctor blades, springs, and Damascus steel billets. Whether you need a carbon steel strip with high hardness for cutting edges or a spring steel strip with fatigue resistance for flexing applications, the right grade and heat treatment profile is critical.

Steel Grades

Available Hardened Steel Strip Grades

We supply multiple grades of hardened steel strip, each optimized for specific applications. Select a grade below for detailed specifications.

Industry Standard

75Cr1 (DIN 1.2003)

The global standard for wood band saw blades. Chromium carbides deliver superior wear resistance. Hardness range HRC 47–52. Also used for food cutting bands and general-purpose hardened strip.

Bimetal Backing

75Ni8 (DIN 1.5634)

Nickel-alloyed spring steel for bimetal band saw blade backing. Exceptional fatigue resistance under cyclic bending. Hardness range HRC 44–52. The standard backing material for metal-cutting bi-metal blades.

Industrial Blades

42CrMo4 (AISI 4140)

Cr-Mo alloy steel with excellent toughness and wide hardenability. Hardness range HRC 28–55. Used for industrial knives, heavy-duty band saw blades, and structural spring applications.

Damascus / Premium

15N20

High-nickel steel prized for Damascus pattern welding and premium blade forging. Hardness range HRC 46–62. Nickel content creates the bright contrast layers in Damascus billets.

High Hardness

SK85 (JIS G 4401)

Japanese carbon tool steel with C 0.85%. Achieves HRC 56–62 after quenching — the highest hardness among carbon grades. Ideal for hardwood band saw blades and scraper blades.

High Toughness

D6A

Low-alloy tool steel with excellent impact toughness. Used for large industrial band saw blades and heavy-section cutting tools. Contact us for specifications and availability.

General Engineering

S45C (JIS G 4051)

Medium carbon steel with good machinability and moderate hardenability. Suitable for general engineering springs, stamped parts, and components requiring balanced hardness and ductility.

Applications

Hardened Steel Strip Applications

Our heat treated steel strip serves manufacturers across multiple industries. Each application demands specific hardness, flatness, and edge quality.

Cutting Tools

Band Saw Blades

Wood, metal, and food band saw blades require hardened strip with consistent tooth-tip hardness and fatigue-resistant body. Grades: 75Cr1, SK85, 75Ni8 (bimetal backing).

Cutting Tools

Industrial Knives

Slitting knives, shear blades, and packaging cutters need high-hardness strip with excellent edge retention. Grades: 42CrMo4, SK85.

Packaging

Die Cutting Rules

Precision steel rules for corrugated board, label, and gasket die cutting. Tight thickness tolerance and consistent hardness are critical. Grades: 75Cr1, SK85.

Printing / Coating

Doctor Blades

Thin hardened strip for ink metering in flexo, gravure, and coating applications. Requires mirror-finish surface and uniform hardness across full width.

Mechanical

Springs

Flat springs, constant-force springs, and return springs rely on spring steel strip with controlled yield strength and fatigue life. Grades: 75Ni8, 42CrMo4.

Artisan / Specialty

Damascus Steel

Pattern-welded Damascus billets use alternating layers of 15N20 (bright nickel layer) and high-carbon steel. Our precision strip ensures consistent layer thickness for uniform patterns.

Supply

Supply Capabilities

Factory direct with in-house heat treatment lines. All grades from a single source, precision controlled.

Monthly Capacity
200+ tons
Thickness Range
0.15–2.50 mm
Width Range
8–300 mm
Hardness Control
±0.5 HRC
Lead Time
15–25 days
MOQ
500 kg
ISO 9001:2015 EN 10132-4 Compliant Custom Hardness Multiple Grades In Stock

Need Hardened Steel Strip?

Tell us your application, grade preference, thickness, width, and hardness requirement. We will recommend the best solution and quote within 24 hours.

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