HARDENED & TEMPERED STEEL STRIPS

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

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Walzen Strips Pvt. Ltd. manufactures ZENHARD^R , 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.

GRINDING: 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

Specification	Grade	%C	%Mn	% P (max.)	% S(max)	% Si (max)	Size range
Medium & High Carbon	C55	0.50-0.60	0.60-0.90	0.035	0.025	0.35	Width: 6.0-325mm Thickness: 0.40-3.00mm
C62	0.60-0.67	0.60-0.90	0.035	0.025	0.35
C80	0.75-0.85	0.60-0.90	0.035	0.025	0.35

Specification

Grade

%Mn

% P (max.)

% S(max)

% Si (max)

Size range

Medium & High Carbon

C55

0.50-0.60

0.60-0.90

0.035

0.025

0.35

Width: 6.0-325mm

Thickness: 0.40-3.00mm

C62

0.60-0.67

0.60-0.90

0.035

0.025

0.35

C80

0.75-0.85

0.60-0.90

0.035

0.025

0.35

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

Surface	: Furnace Blue-Grey or Bright Ground Finish
Edges	: Available in rounded edges
Tolerance	: 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:

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

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.

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ZENHARDR is Walzen’s premium range of Hardened & Tempered Medium & High Carbon Steel Strips, engineered for high-performance industrial applications requiring superior strength, hardness, toughness, and spring properties.

ZENHARDR undergoes controlled austenitizing, oil quenching, and precision tempering, giving it uniform hardness, excellent spring characteristics, minimal distortion, and superior surface finish.

They are used in saws, hand tools, trowels, industrial knives, automobile parts, valve plates, spring washers, roller shutter springs, and various textile & jute mill components.

Yes. It conforms to IS: 2507, DIN 17222, BS: 1449, ASTM A-682 and other global benchmarks for hardened & tempered steel strips.

ZENHARDR is offered in standard hardness levels: 0.40mm & below: 525 – 600 Hv 0.40 to 0.80mm: 475 – 550 Hv Above 0.80mm: 425 – 500 Hv Custom hardness available on request.

Yes. ZENHARDR can be provided with precision rounded edges using carbide-tip machining for longer fatigue life and safer handling.

You can choose between: Furnace Blue-Grey finish Bright Ground finish Both options provide excellent consistency and corrosion resistance.

Widths: 6mm to 325mm Thickness: 0.40mm to 3.00mm Non-standard sizes can be produced upon request.

To deliver exact specifications, customers should share: Product description Relevant standard (IS/DIN/BS/ASTM) Required thickness & width Hardness Edge type (square/rounded) Tolerance requirements Coil type & inner diameter Any special manufacturing requests

ZENHARDR is widely used in: Saws & cutting tools Hand tools & trowels Industrial knives Automobile components Textile & jute mill accessories Brake & clutch components Spring applications (roller shutter springs, toy springs, etc.) Compressor valve plates Sugar cane cutting tools Its versatility makes it suitable for more than 25+ industrial categories.

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