Stainless steel material: 1Cr18Ni9Ti (321), Cr23Ni13 (309S), 1Cr20Ni14Si2, Cr25Ni20 (310S) 1Cr25Ni20Si2, there are also some low temperature areas (such as low temperature superheater, low temperature reheater) using 1 Cr 13,1Cr6Si2Mo and other materials, the selection of materials is generally subject to the initial design of the Boiler, alia materiae temperatus resistentia, mechanica vires:
| 序号 | 材质 | 耐温度 | 屈服强度 00 . 2 mpa | 抗拉强度 | 伸 长 率 0 5 % | HB | HRB | HV |
| 1 | 1Cr18ni9ti | 925 | Maior quam aequalis CCV | Major vel aequalis DXX | Maior quam vel aequalis XL | Minus quam aequalis CLXXXVII | Minus vel aequalis XC | Minus vel aequalis CC |
| 2 | Cr23ni13 | 1095 | Maior quam aequalis CCV | Major vel aequalis DXX | Maior quam vel aequalis XL | Minus quam aequalis CLXXXVII | Minus vel aequalis XC | Minus vel aequalis CC |
| 3 | 1cr20ni14si2 | 1095 | Major vel aequalis DXC | Maior quam vel aequalis XL | ||||
| 4 | Cr25ni20 | 1150 | Maior quam aequalis CCV | Major vel aequalis DXX | Maior quam vel aequalis XL | Minus quam aequalis CLXXXVII | Minus vel aequalis XC | Minus vel aequalis CC |
| 5 | 1Cr2025ni20si2 | 1150 | Maior quam aequalis DXL | Maiore vel aequalis XXXV |
