SPRL-PL-I
Rev.By l'%Pt/ MATERIAL SPECIT'ICATIONS Doc.No.:CMSlTl)g lOate :08.10.2009
TITLE :PIN STEEL 16 Mn Cr5 Rev.No. I : :l of I
I CHEMICAL COMPOSITION:
ELEMENTS RANGE PERMISSIBLE DEVIATION
Carbon (C)% 0.14 - 0.19 % +l- 0.02 %
Silicon (SD % 0.15 - 0.3s % 0.03 %
Manganese (Mn) % 1.00 - 1.30 % 0.04 %
Chromium (Cr)% 0.80 - l.l0 o/o +l- 0.05 %
Phosphourus (P) % 0.035 % Max. +l- 0.005 o/o
Sulphur (S)% 0.035 % Max. +l- 0.005 %
2 MECHANICAL PROPERTIES:
a). Bars to be supplied in annealed condition with the hardness of I 56 to 202 BHN ( 70 to 87 HRB).
Tensile strength in core after Heat Treatment should be 85 - 120 Kg/Sq.mml (Core hardness 45 HRC
b). Max.)
3 DIMENSIONAL ACCURACY:
a). Tolerance on diamter should be +0.1 MM
b). Bar should be straight within lmm/Nttr.
c). Bar should be free from lobbing.
4 GRAIN - SIZE:
The grainsize shall be fine grain preferably 6 - 8 as per IS 4748 - 1988.
5 SURFACE QUALITY:
}\/
Surface should be free fronm seam, scales, rust, fold crack and other inegularities.
6 INCLUSION:
o/o
the permissioble slag inclusions under group A,B,C abd D for thick and thin series shall not exceed 2
as per IS 4163 - 1982.
7 GENERAL:
- Consignment to be supplied alongwith supplier test certificate
- Consignment to be packed with PVC bag and strapped for proper handling / road worthy hansit
- Each and every steel bar to be checked by spark for chemical composition at supplier end.
Test certificate should cover declaration that every bar checked and certified
Rev.By l'%Pt/ MATERIAL SPECIT'ICATIONS Doc.No.:CMSlTl)g lOate :08.10.2009
TITLE :PIN STEEL 16 Mn Cr5 Rev.No. I : :l of I
I CHEMICAL COMPOSITION:
ELEMENTS RANGE PERMISSIBLE DEVIATION
Carbon (C)% 0.14 - 0.19 % +l- 0.02 %
Silicon (SD % 0.15 - 0.3s % 0.03 %
Manganese (Mn) % 1.00 - 1.30 % 0.04 %
Chromium (Cr)% 0.80 - l.l0 o/o +l- 0.05 %
Phosphourus (P) % 0.035 % Max. +l- 0.005 o/o
Sulphur (S)% 0.035 % Max. +l- 0.005 %
2 MECHANICAL PROPERTIES:
a). Bars to be supplied in annealed condition with the hardness of I 56 to 202 BHN ( 70 to 87 HRB).
Tensile strength in core after Heat Treatment should be 85 - 120 Kg/Sq.mml (Core hardness 45 HRC
b). Max.)
3 DIMENSIONAL ACCURACY:
a). Tolerance on diamter should be +0.1 MM
b). Bar should be straight within lmm/Nttr.
c). Bar should be free from lobbing.
4 GRAIN - SIZE:
The grainsize shall be fine grain preferably 6 - 8 as per IS 4748 - 1988.
5 SURFACE QUALITY:
}\/
Surface should be free fronm seam, scales, rust, fold crack and other inegularities.
6 INCLUSION:
o/o
the permissioble slag inclusions under group A,B,C abd D for thick and thin series shall not exceed 2
as per IS 4163 - 1982.
7 GENERAL:
- Consignment to be supplied alongwith supplier test certificate
- Consignment to be packed with PVC bag and strapped for proper handling / road worthy hansit
- Each and every steel bar to be checked by spark for chemical composition at supplier end.
Test certificate should cover declaration that every bar checked and certified
