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ZENHARDR Walzen make Hardened & Tempered Medium & High Carbon Steel Strips, finds wide applications in special industrial uses. ZENHARDR has excellentspring properties, uniform hardness and texture, ZENHARDR has precision blanking ability and rationalizes further processing by eliminating post heat treatment & distortion and thereby increases productivity.

Walzen Strips Pvt. Ltd.

Walzen Strips Pvt. Ltd. manufactures ZENHARDR, Hardened & Tempered Steel Strips, conforming to National and International Standards viz, IS: 2507, DIN 17222. BS: 1449, ASTM A-682. High Carbon Low Alloy hardened and tempered steel strips is produced in-house from cold rolled steel strips and heat-treated in continuous line to develop high hardness, toughness to achieve required spring properties.

Steps involved for manufacture of Hardened & Tempered Steel strips:

Austenitizing of Medium & High Carbon and Low Alloy steels is carried out in 12 M long gas fired furnace with automatic controls and heat resistant S.S. Muffle to provide inert cover to the strips. Quenchingl in oil produces very hard martensite, which is then tempered down in a 7 M long electrically heated tempering furnace. Variable speed DC drive with UPS back-up ensures uninterrupted processing even during power failure.

Edge rounding

Hardened and tempered strips are also available in rounded edges for special applications and for high fatigue life. This is done by machining of edges with profiled carbide tips.


Hardened and tempered strips are available in bright polished surface by grinding the surfaces with waterproof coated abrasive belts in strip grinding machine with coolant flow.

ZENHARD : Chemical composition & Sizes

SpecificationGrade%C %Mn% P (max.)% S(max)% Si (max)Size range
Medium & High CarbonC550.50-0.600.60-0.900.0350.0250.35

Width: 6.0-325mm

Thickness: 0.40-3.00mm

  • Low Alloy steels against specific enquiry
  • Non-standard sizes against specific enquiry

Special features:

  • Minimum decarburisation
  • Uniform Hardness and Texture
  • High degree of toughness
  • Excellent Spring Properties
  • Precision blanking ability
  • Minimum edge camber
  • Flatness across width
  • No curling
Supply Condition:

Hardened and Tempered


Furnace Blue-Grey or Bright Ground Finish


Available in rounded edges


On Width & Thickness as per BIS/International Standards.

Standard Hardness:

Thickness Hardness
Upto 0.40mm 525 – 600 Hv
Above 0.40 mm upto 0.80 mm 475 – 550 Hv
Above 0.80mm 425 – 500 Hv
  • Non-standard hardness may be supplied against specific enquiry.

Typical Application and Uses:

  • Wood cutting Band saws
  • Hand saws
  • Cross-cut saws
  • Pit saws
Hand Tools
  • Paint Scrappers
  • Plastering Trowels
Industrial Knives
  • Leather
  • Plastic
  • Textile
  • Sugar Cane
Spring applications
  • Roller Shutter Spring
  • Springs for electronics toys
Automobile Products
  • Clutch plates
  • Brake components
  • Horn diaphragms
  • Spring & Spring Washers
  • Textile and Jute mill accessories
  • Compressor valve plates
  • Forge Hammer Belts
Special Note:​

Through integration of production facilities,

Walzen can offer a complete range of Hardened & Tempered Steel Strips according to International Standard. Purchaser may furnish the following information to meet exact requirement.

  • Description of the product.
  • Number of relevant International Standard.
  • Nominal thickness and width in millimeters.
  • Hardness
  • Edge requirement.
  • Required tolerance
    • On thickness
    • On width
    • On edge camber
  • Type of coil and coil internal diameter.
  • Special requirement, if any.

Walzen Strips Pvt. Ltd.


Head Office
P-250, C.I.T Road, Scheme – VIM
Kolkata – 700054, West Bengal, India.

Walzen Strips Pvt. Ltd. © 2024. All Rights Reserved.
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ISO 9001:2015
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Global Certificate
ISO 9001:2015