Roestvrij stiel materiaal: 1cr18ni9ti (321), cr23yni13 (309s), 1cr25ni20si2, binne ek wat materiaal, de seleksje fan materialen is oer it earste ûntwerp fan 'e ketel, Different Materialen temperatuer ferset, meganyske sterkte:
| 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 | Grutter as of gelyk oan 205 | Grutter as of gelyk oan 520 | Grutter as of gelyk oan 40 | Minder as of gelyk oan 187 | Minder as of gelyk oan 90 | Minder as of gelyk oan 200 |
| 2 | Cr23ni13 | 1095 | Grutter as of gelyk oan 205 | Grutter as of gelyk oan 520 | Grutter as of gelyk oan 40 | Minder as of gelyk oan 187 | Minder as of gelyk oan 90 | Minder as of gelyk oan 200 |
| 3 | 1CR20NI14SI2 | 1095 | Grutter as of gelyk oan 590 | Grutter as of gelyk oan 40 | ||||
| 4 | Cr25ni20 | 1150 | Grutter as of gelyk oan 205 | Grutter as of gelyk oan 520 | Grutter as of gelyk oan 40 | Minder as of gelyk oan 187 | Minder as of gelyk oan 90 | Minder as of gelyk oan 200 |
| 5 | 1cr25ni20si2 | 1150 | Grutter as of gelyk oan 540 | Grutter as of gelyk oan 35 |
