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supporting concrete slabs, together with results from a parallel
numerical study, were used to develop expressions for stainless
steel member design in fire [10]. Six fire resistance tests on
stainless steel columns have previously been performed [11,
12], but instead of following the temperature–time relationship
specified by the standard fire curve [13], the furnace
temperature followed a bespoke, bi-linear variation with time.
2. Material properties and cross-section temperature
development characteristics
Tests were carried out on five grades of stainless steel,
three of which were austenitic — 1.4301 (304), 1.4401
(316) and 1.4571 (316Ti), one ferritic — 1.4003, and one
duplex — 1.4462, with the grades defined according to the
numerical designation system of EN 10088-1 [14]. Equivalent
grades according to the commonly adopted AISI system are
shown in b
柱和梁构件支撑混凝土板的测试结果和平行的数值研究结果用于开发不锈钢耐火构件设计的表达式[10]。以前曾进行过不锈钢柱6个耐火性测试[11， 12]，但不是下述标准耐火曲线的温度–时间关系[13]，炉温遵从随着时间的二重变异。
2. 做了5个等级的不锈钢的材料特性和横截面钢温度发展特性测试，其中三个是奥氏体1.4301 (304)、1.4401(316)和1.4571(316Ti)，一种铁氧体1.4003和一种双相不锈钢1.4462，等级定义是根据“EN 10088-1”数值设计系统[14]。相等级别根据括号中最常采用的“AISI系统”。结构应用最常用的等级是奥氏体和双相等级。 典型的奥氏体不锈钢含有17%–18% 的铬 和8%–11%的镍，提供了非常好的耐腐蚀性和具有奥氏体微观结构。 典型的双相不锈钢含有22%–23%的铬和4%–5% 的镍并且兼具奥氏体–铁氧体微观结构。双相不锈钢提供了高强度，最佳耐腐蚀性和比奥氏体更好的耐磨性，但是造价更高。测试程序由室温抗张测试和升温条件下的等温与非等温抗张测试组成[4]。室温测试和“EN 10002-1”标准一致[15]。
Results from the member tests on columns and beams
supporting concrete slabs, together with results from a parallel
numerical study, were used to develop expressions for stainless
steel member design in fire [10]. Six fire resistance tests on
stainless steel columns have previously been performed [11,
12], but instead of following the temperature–time relationship
specified by the standard fire curve [13], the furnace
temperature followed a bespoke, b