Rails

Rails

Profile	Sectional Wt Kg/M	Standard Length(Metres)	Mill
R – 45	44.61	13	Rail & Structural Mill, Bhilai
R – 52	51.89	13, 26, 130, 260	Rail & Structural Mill, Bhilai
R – 60	60.34	13, 26, 130, 260	Rail & Structural Mill, Bhilai

Product nomenclature for 13 m & 26 m is “RAIL” and for 130 m & 260 m is “LONG RAIL PANEL”.

Specification

Specifications	Grade	Application(Speed of Train Km/Hr)
A) Prime Quality Rails
IRS-T-12/2009	880	>50
Head Hardened (HH)	1080	>50
Chromium (Cr)	1080	>50
B) Special Rail Steel
Niobium (NB)	880	>50
Vanidium ( VN)	880	>50
C) Corrosion Resistant Rail Steel
Copper-Molybdenum (CM)	880	>50
Nickel, Chromium, Copper (NC)	880	>50
D) Industrial use
IRS-T-12-IU	880	<50
IU	880	<50

Note:
1. Hydrogen content 1.6 ppm Max & Aluminium – .015 max.
2. Bhilai Steel Plant has taken up project to produce rail sections 68 KG & ZU1-60 (Asymmetric RAIL).
3. BSP is also developing 110 UTS quality rails.
4. Bhilai Steel Plant can also produce rails as per specifications of the union of international railways and other foreign specifications, like British standard or Japanese industrial standards if sufficient orders are available.

Chemical Composition Percentage

Grade	C	Mn	Si	S(max)	P(max)	Al(max)	Mo(max)	Cr	V (max)	Nb(max)	10-4%(ppm) max by mass O	Hydrogen content in liquid steel(max)
880	0.60-0.80	0.80-1.30	0.10-0.50	0.030*	0.030*	0.015	–	–	–	–	–	1.6 ppm
1080 Cr	0.60-0.80	0.80-1.20	0.50-1.10	0.025	0.025	0.004	0.20	0.80-1.20	0.20		20	1.6 ppm
1080 HH	0.60-0.80	0.80-1.30	0.10-0.50	0.030*	0.030*	0.015	–	–	–	–	–	1.6 ppm
Special Rail Stee
NIOBIUM (NB)	0.60-0.80	0.80-1.30	0.10-0.50	0.030*	0.030*	0.015	–	–	–	0.04	–	1.6 ppm
VANADIUM (VN)	0.60-0.80	0.80-1.30	0.10-0.50	0.025*	0.030*	0.015	–	–	0.20	–	20	1.6 ppm
Corrosion Resistant Rail Steel
Copper-Molybdenum (CM) 0.35	0.60-0.80	0.80-1.30	0.10-0.50	0.030*	0.030*	0.015	0.2-0.3	–	0.25-	–	–	1.6 ppm
Nickel Chromium Copper(NC)	0.60-0.80	0.80-1.30	0.10-0.50	0.030*	0.030*	0.015	0.25	0.50-0.65	0.3-0.4	0.25-	–	1.6 ppm

Mechanical Properties

UTS(MPa)(min)	Yield Strength***(MPa)(min)	Elongation% om Gauge Length-5.65 So(min)	Running Surface Hardness (BHN)
880	460	10.0	Min 260**
1080	560	9.0	320-360
1080	460	10.0	340-390
880	540	10.0	Min 260**
880	630	9.0	Min 260
880	460	10.0	260
880	520	10.0	260

So=Cross sectional area of tensile test piece in mm2
* 0.035 maximum for finished rail
The chemical compositions specified as above are applicable to Ladle analysis and Product Analysis. Manufacture shall ensure that chemcial composition at ladle analysis should be such
that product analysis also satisfies the requirement of chemical composition as above.
** Desirable Value.

Light rails

Profile	Sectional Wt kg/m	Standard Length	Mill
15 kg/m	14.88	7.5 m and above	LSM
30 kg/m	29.76	11.5 m and above	HSM
45 kg/m	44.61	11.5 m and above	HS

* Work Tested Quality only

LSM : Light Structural Mill
HSM : Heavy Structural Mill
Note : Below 11.5 m can also be supplied

 

Applications

Specifications	Applications
15 kg/m	Coal tub tram in colliery etc.
30 kg/m	Coal tub tram in colliery etc.
45 kg/m	Slow speed Railway, Light post, Charging Car, Coke Car and Coke guide car track etc.