Hardened & Tempered Steel Strips
Hardened & Tempered Steel Strips of Low, Medium & High Alloy Carbon
Steel is produced with a unique processing facility. Liquid metal bath
quenching with automatic computerized temperature control system is employed
which is different from conventionally used oil quenching process. The
process to produce Bainitic Steel Strips having unique combination of
hardness with ductibility that improves the Toughness property.
Product Specification
The strips are manufactured from high quality killed and vacuum degassed
steel cold rolled in-house in modern cold rolling mills with close
dimensional tolerance. Standard grades are -
One or Both Edges Round, Square, Chamfered &
Beveled
Grades
Steels having Medium and High Carbon and Low
Alloy contents.
Tolerances
As per IS 2507-1975 or DIN 1544 Normal
variations.
Microstructure
Tempered Martensite or Bainite
Hardness
As per customer's specific requirements for a
particular purpose - Hardened & Tempered , as Rolled Hard and as
Annealed.
The approximate range is given below
Thickness Range (mm)
Hardened &
Tempered
As rolled Hard
As Annealed
0.10 to 0.20
400 to 650 HV/40 TO 58 RC
300
-
0.30 to 0.45
400 to 575 HV/40 to 55 RC
-do-
-
0.50 to 0.90
300 to 575 HV/29 to 55 RC
-do-
180 to 200 HV/6 to12 RC
1.00 and above
280 to 550 HV/28 to 53 RC
-do-
-do-
Special Features
Minimum de-carburisation.
Minimum edges camber.
Flatness across width.
No curling.
Application
Suitable for manufacturing of -
Wood cutting band-saws, pit-saws, cross-cut saws, hand saws etc.
Also components like clutch plates, brake items,horn diaphragm.
Industrial knives for cutting leather,
card-board,paper,sugar-cane, jute and other products.
Hand tools like paint scrapers, plastering trowel etc.
Spring and spring-washers.
Textile and jute mill accessories, forge hammer belts etc.
Packing Strips
Steel Strappings are manufactured from low and medium carbon strapping
quality cold rolled steel strips, produced in-house with utmost control. The
strips are then deburred, austempered, painted and waxed in continuous line
with automatic controls, incorporating the latest technology.Proper
selection of grade of steel is made to ensure ideal combination of physical
properties
Steel strappings are produced with very close tolerances in dimension and
physical properties, thereby ensuring a consistent and uniform quality. The
straps conform to Indian and International Standards viz. IS:5872-1990 and
ASTM-D3953. Steel Strappings are available both for Light Duty and Heavy
Duty applications to allow a wise choice to the customer. Standard
properties of straps are as follows:
For any other size/property, special enquiry is to be made.
Special Features
Edges
Edges of the strip are roller beveled by formed rolls, which removes the
burrs and also provides better contact with seals during sealing.
Surface
Painting of strip surface is carried out on-line, by dipping in paint tank,
wiping to maintain a constant coating thickness and finally in Infrared
ovens. Painting ensures improved corrosion resistance with 48 Hrs.
resistance to neutral salt spray as per IS-9844-1981.
Waxing of strip after painting improves transmission of tension during
packing, especially around corners of the package, and ensures slippage load
below 6.5 Kgs.
Zinc painting is done with Zinc enriched paint for corrosion resistance
under very severe conditions, as also to provide cathodic protection when
packing galvanized items. Zinc painted strips provide resistance against
salt spray corrosion for 96 Hrs.
Colling
Coils are supplied either in Ribbon wound single coils, Oscillated Wound
Coils and Jumbo Coils. Ribbon wound coils are single coils with individual
layers wound directly over the previous layer. Oscillated Wound and Jumbo
coils are wound on a core with each layer spaced at a particular pitch over
the specified spool width.
The coils are normally supplied with following parameters. However,
specific requirement of customers may also be supplied on enquiry.
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