B861 Grade 7H_全球钢材百科网钢材化学成分-热处理-物理性能介绍-全球钢材百科网

B861 Grade 7H简介

牌号	B861 Grade 7H
美国UNS	R52400
对应标准	ASTM B861-2019 钛及钛合金无缝管 Titanium and Titanium Alloy Seamless Pipe
归类	钛及钛合金

B861 Grade 7H 化学元素成分含量(%)

成分	Fe	C	N	H	O	Pd	其他单个	其他合计	更多
最小值	-	-	-	-	-	0.12	-	-	Ti:余量
最大值	0.3	0.08	0.03	0.015	0.25	0.25	0.1	0.4	Ti:余量

其他单个或其他合计化学成分包括表中未指定值的化学成分。只有在假定存在或在常规分析中，且有迹象表明其成分将超过规定值的情况下，才应进行分析。 ① At minimum, the analysis of samples from the top and bottom of the ingot shall be completed and reported for all elements listed for the respective grade in this table.
② Final product hydrogen shall be reported. Ingot hydrogen need not be reported. Lower hydrogen may be obtained by negotiation with the manufacturer.
③ Single values are maximum. The percentage of titanium is determined by difference.
④ Other elements need not be reported unless the concentration level is greater than 0.1 % each, or 0.4 % total. Other elements may not be added intentionally. Other elements may be present in titanium or titanium
alloys in small quantities and are inherent to the manufacturing process. In titanium these elements typically include aluminum, vanadium, tin, chromium, molybdenum, niobium, zirconium, hafnium, bismuth, ruthenium,
palladium, yttrium, copper, silicon, cobalt, tantalum, nickel, boron, manganese, and tungsten.
⑤ The purchaser may, in the written purchase order, request analysis for specific elements not listed in this specification. Grade 7H主要用于压力容器

B861 Grade 7H 机械性能

抗拉强度 σ_b Mpa	屈服点 σ_s Mpa	断后伸长率或延伸率 δ %
≥400	275~450	≥20

*Properties for annealed condition except as noted.

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