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A551 Class DHT簡介

牌號 A551 Class DHT
對應(yīng)標(biāo)準(zhǔn) ASTM A551/A551M-2008(R2018)
鐵路和快速運(yùn)輸用碳鋼輪箍
Standard Specification for Carbon Steel Tires for Railway and Rapid Transit Applications
歸類 合金鋼
說明 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 化學(xué)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
碳當(dāng)量計算
A551 Class DHT 機(jī)械性能
抗拉強(qiáng)度
σb
Mpa 		斷后伸長率或延伸率
δ
% 		斷面收縮率
ψ
% 		硬度
HBW
≥1070 ≥10 ≥20 321~363
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