试样类型：S355钢

试样尺寸：ϕ5*25

实验要求：

1.升温按照国标测试；

2.降温按照如下方式分别测试：

1500℃ → 1min →  950℃→    2min →   900℃ → 45min  → 450℃  → 标准；

3.实验中请采用氩气保护。

Specimen type: S355 steel

Specimen size: ϕ5*25

Experimental requirements:

1. temperature rise please test in accordance with the national standard;

2. Please test the cooling temperature in accordance with the following way respectively:

1500℃ → 1min → 950℃ → 2min → 900℃ → 45min → 450℃ → Standard temperature;

3. Please use argon gas protection in the experiment.