又爽又黄无遮挡高潮视频网站,久久精品人妻一区二区三区,粗壮挺进人妻水蜜桃成熟漫画,日韩人妻无码精品无码中文字幕

c34200 鉛黃銅板材、板材、帶材

c34200黃銅合金包含63％的銅、0.6％的鉛、0.1％的鐵,其余為鋅。添加到合金中的少量信息使其易于加工,并增強(qiáng)了其自由切削性能。

element content (％)

cu 64.5

pb 2

zn 33.5

astm b121 c34200 astm b121/b121m introduction

用途：鉛黃銅板材、板材、帶材和軋制棒材。

熱處理：1741°c-1965°c。

astm b121 c34200 astm b121/b121m mechanical

yield tensile impact elongation reduction in cross section on fracture as-heat-treated condition brinell hardness (hbw)

rp0.2 (mpa) rm (mpa) kv/ku (j) a (％) z (％)

134 (≥) 187 (≥) 11 41 14 solution***aging, annealing, ausaging, q+t,etc 114

astm b121 c34200 astm b121/b121m physical

basic physical properties of astm b121 c34200 astm b121/b121m steel

temperature modulus of elasticity mean coefficient of thermal expansion 10-6/(°c) between 20(°c) and thermal conductivity specific thermal capacity specific electrical resistivity density poisson’s coefficient, ν

(°c) (gpa) (w/m·°c) (j/kg·°c) (ω mm2/m) (kg/dm3)

31 - - 0.21 -

618 148 - 31.3 421 -

594 - 31 14.2 211 444

astm b121 c34200 astm b121/b121m processing service