Standard No.:	GB/T 27552-2011
English Name:	Destructive tests on welds in metallic materials - Microhardness testing of welded joints
Chinese Name:	金属材料焊缝破坏性试验 焊接接头显微硬度试验
Chinese Classification:	J33    Welding and cutting
Professional Classification:	GB    National Standard
ICS Classification:	25.160.40 25.160.40    Welded joints and welds 25.160.40
Issued by:	AQSIQ; SAC
Issued on:	2011-11-21
Implemented on:	2012-6-1
Status:	abolished
Superseded by:	GB/T 27552-2021 Destructive tests on welds in metallic materials—Microhardness testing of welded joints
Superseded on:	2022-5-1
Abolished on:	2022-05-01
Language:	English
File Format:	PDF
Word Count:	5000 words
Price(USD):	130.0
Delivery:	via email in 1~3 business day

本标准规定了硬度梯度大的金属材料焊接接头横截面显微硬度试验。依据ISO 6507-1:2005进行维氏硬度试验，通常使用的试验力范围为0.98N到小于49.03N（HV 0.1到小于HV 5）。
注 :硬度试验应确保测出焊缝金属和两侧母材（两侧母材为不同金属材料）的最高硬度和最低硬度。
本标准规定的焊缝硬度试验使用的试验力不包括ISO 9015-1规定的大于等于49.03N的试验力。
本标准不适用于窄焊缝试样的硬度试验，例如激光焊和电子束焊焊缝。
本标准适用于金属材料焊接接头横截面显微硬度试验。