ISO/TR 17641-3:20 05概述了进行外部载荷试验以评估热开裂敏感性的试验方法和程序。 描述了以下测试: 热拉伸试验varestraint和Transvarestraint试验平面拉伸试验。 上述试验可以提供母材、焊缝金属和焊件的热裂敏感性信息。评估基于热裂纹发生的“脆性温度范围”（BTR）的测量。 本文件主要适用于奥氏体不锈钢、镍、镍基和镍铜合金、焊件和焊接消耗品。然而，这些原理可以扩展到其他材料，例如铝合金和高强度钢。

ISO/TR 17641-3:2005 outlines the test methods and procedures for carrying out externally loaded tests to assess susceptibility to hot cracking. The following tests are described:

• Hot tensile tests
• Varestraint and Transvarestraint test
• Flat tensile test.

The above tests can provide information about the hot cracking sensitivity of parent materials, weld metals and weldments. Assessment is based upon the measurement of the "brittle temperature range" (BTR) where hot cracks occur. This document applies primarily to austenitic stainless steels, nickel-, nickel-base and nickel-copper alloys, weldments and welding consumables. However, the principles can be extended to other materials such as aluminium alloys and high-strength steels.