HOT ROLLED CARBON STEEL SHEET (330 N/mm2 TENSILE)
FOR INTERNAL USE ONLY
REMOVE THIS PREFACE SHEET BEFORE ISSUE TO SUPPLIERS
Comparable Standards:
1. INDIAN : IS: 5986-2002, Gr: Fe 330
Suggested/Probable Suppliers And Grades:
1. M/sSAIL : IS: 5986, Gr.: Fe 330
2. Refer plant vendors list
User Plant References:
l.HEEP,HARDWAR : 0500.004, Gr.: St.34
2. HYDERABAD : HY 02122 99
3.BHOPAL : PS 10113
4.TRICHY : BM-C10
HOT ROLLED CARBON STEEL SHEET (330 N/mm2 TENSILE)
1.0 GENERAL:
This specification governs the quality requirements of Hot Rolled Carbon Steel Sheet
of thickness of 2.5 mm to 4.0 mm (both inclusive).
2.0 APPLICATION:
Suitable for cold forming/drawing/ fabrication by welding..
3.0 CONDITION OF DELIVERY:
Sheets shall be supplied in hot rolled, descaled and oiled condition. Imported sheets shall
be supplied in straight lengths. The edges shall be flattened and sheared. Mill edges are
not acceptable. Sheets shall be free from waviness and shall have a uniformly dull (matt)
finish.
Oil used for rust prevention should be free from pungent smell. The following oils are
suggested:
a) SERVO RP 125 of M/s. IOC.
b) RUSTOP 387/388 of M/s. HPC
c) Bharat TCPF of M/s. Bharat Petroleum
d) Any other TRP conforming to IS : 1154
4.0 COMPLIANCE WITH NATIONAL STANDARDS:
The material shall comply with the requirements of the following National standards
and also meet the requirements of this specification.
IS: 5986-2002, Gr.: Fe 330 : Hot Rolled Steel Plates, Sheets, Strips and Flats for
flanging and forming operation.
5.0 DIMENSIONS AND TOLERANCES:
5.1 Sizes:
Hot rolled carbon steel sheets shall be supplied to the dimensions in BHEL order.
5.2 Tolerances:
The tolerances on sheets shall comply with the following:
5.2.1 Thickness (IS: 1852):
Thickness, mm Tolerance, mm
2.50 ±0.20
3.15 ±0.22
4.0 ± 0.25
5.2.2 Width (IS: 1852):
Width, mm Tolerance, mm
Upto & incld. 1250 mm +6 mm
- Omm
Over 1250 mm & upto and incld. 1550 mm + 0.5 percent
- 0.0 percent
Over 1550 mm + 0.6 percent
- 0.0 percent
5.2.3 Length (Continuous mill) IS: 1852:
Length, mm Tolerance, mm
Upto & incld. 2500 mm + 25 mm
- 00 mm
Over 2500 mm + 1 percent subject to a maximum of 70 mm
- 0 percent
5.2.4 Flatness (for cut lengths):
Thickness, mm Width, mm Flatness tolerance, mm
From 2.5 to 4.0 Upto & incld. 1200 15
Over 1200 & upto incld. 1500 20
Over 1500 25
5.2.5 Edge camber IS:5986:
The edge camber (i.e. lateral departure of the edge of the material from a straight line
forming a chord) of sheets in cut lengths and coil shall not exceed the following values:
5.2.5.1 For Cut Lengths:
Length in meters Tolerance, mm
Over Upto & incld.
1.25 5
1.25 1.80 6
1.80 2.50 8
2.50 3.15 10
3.15 3.55 12
3.55 4.00 16
4.00 5.00 19
5.2.5.2 For Coils:
25 mm in any 5000 mm length.
6.0 MANUFACTURE:
Process of manufacture is left to the discretion of the manufacturer except Bessemer
process.
Material shall be manufactured from semi killed or killed steel.
7.0 FREEDOM FROM DEFECTS:
The sheets shall be free from harmful defects, twists, buckle, rust, scale and waviness and
shall be reasonably smooth, flat and square.
8.0 CHEMICAL COMPOSITION :
The melt analysis of steel and the permissible variation in the composition of the material
from the melt analysis shall be as follows:
Element Melt analysis, percent, max. Permissible variation, percent, max.
Carbon 0.15 0.03
Manganese 0.80 0.05
Sulphur 0.040 0.005
Phosphorus 0.040 0.005
9.0 TEST SAMPLES:
9.1 Tensile Test:
One sample shall be taken per thickness per consignment from each melt.
As far as possible test pieces shall be cut transverse to the direction of rolling and shall be
of full thickness of the sheet rolled.
9.2 Bend Test:
One sample shall be taken per thickness per consignment from each melt.
Bend test pieces shall be cut so that the axis of the bend is parallel to the direction of rolling
viz. transverse.
Note: When more than one thickness is rolled from the same melt, one additional test
piece for each thickness shall be taken.
