ASME SECTION II B SB-251-2008 标准规范下载.pdf

2008a SECTION II, PART B SB-251 SPECIFICATION FOR GENERAL REQUIREMENTS FOR WROUGHT SEAMLESS COPPER AND COPPER-ALLOY TUBE SB-251 (Identical with ASTM Specification B 251-021 except that certification and mill test reports have been made mandatory.) A08 1. Scope B 743 Specification for Seamless Copper Tube in Coils 1.1 This specification covers a group of general require- E 3 Guide for Preparation of Metallographic Specimens ments common to several wrought product specifications. E 8 Test Methods for Tension Testing of Metallic Materials Unless otherwise specified in the purchase order, or in an E 18 Test Methods for Rockwell Hardness and Rockwell individual specification, these general requirements shall Superficial Hardness of Metallic Materials apply to copper and copper-alloy tube supplied under Spec- E 29 Practice for Using Significant Digits in Test Data to ifications B 68, B 75, B 135, B 466/B 466M, and B 743. Determine Conformance with Specifications E 53 Test Methods for Determination of Copper in Unal- NOTE 1 — A complete metric companion to Specification B 251 has loyed Copper by Gravimetry been developed—B 251M; therefore, no metric equivalents are presented E 62 Test Methods for Chemical Analysis of Copper and in this specification. Copper Alloys (Photometric Methods) E 112 Test Methods fo