Rail Joint Bars To TB/T2345-2008 For China
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Chinese Standard Fishplates
Standard: TB/T2345-2008
Material: Chinese steel grade 55#
Size: 43KG , 50KG, 60KG, 75KG
Chemical Composition
C Mn Si S P
0.52-0.60 0.50-0.80 0.17-0.37 ≤0.035 ≤0.035
Mechanical Property
Tensile strength Rm : ≥785 Mpa
Yield strength Rel / Rr0.2 : ≥520 Mpa
Elongation A : ≥9%
Reduction of Area Z: ≥20%
Brinell Hardness HBW10 / 3000 : HBW 227-388
Cold Bend d=3a : 30 degree, no crack
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