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A551 Class DHT简介

牌号 A551 Class DHT
对应标准 ASTM A551/A551M-2008(R2018)
铁路和快速运输用碳钢轮箍
Standard Specification for Carbon Steel Tires for Railway and Rapid Transit Applications
归类 合金钢
说明 For heat-treated driving tires for locomo-tives with light braking conditions, heavily loaded trailer tires, and rapid transit wheels where off-tread brakes are employed.
A551 Class DHT 化学元素成分含量(%)
成分 C Si Mn P S Cr Ni Cu Mo Ti V Nb Al
最小值 0.7 0.15 0.6 - 0.005 - - - - - - - -
最大值 0.85 1 0.9 0.03 0.04 0.25 0.25 0.35 0.1 0.03 0.04 0.05 0.06
碳当量计算
A551 Class DHT 机械性能
抗拉强度
σb
Mpa
断后伸长率或延伸率
δ
%
断面收缩率
ψ
%
硬度
HBW
≥1070 ≥10 ≥20 321~363
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