| 牌號 | X6CrNiNb18-10 |
|---|---|
| 1.4550 | |
| 對應(yīng)標(biāo)準(zhǔn) | NF EN 10088-2-2005
普通用途不銹鋼板和鋼帶的交貨技術(shù)條件 Part2:Technical Delivery Conditions for Sheet/Plate and Strip of Corrosion Resisting Steels for General Purposes |
| 歸類 | 奧氏體不銹鋼 |
| 標(biāo)簽 | 特殊等級 |
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交付條件下在高溫下的最小屈服強(qiáng)度
Material designation Heat treatment
conditionMinimum 0.2%-proof strength,MPa
at a temperature (in°C) of:Minimum 1%-proof strength,MPa
at a temperature (in°C) of:Name Number 100 150 200 250 300 350 400 450 500 550 100 150 200 250 300 350 400 450 500 550 X6CrNiNb18-10 1.4550 +AT 177 167 157 147 136 130 125 121 119 118 211 196 186 177 167 161 156 152 149 147
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符合本歐洲標(biāo)準(zhǔn)的產(chǎn)品熱處理指南
Material designation Hot forming Heat treatment
symbolSolution anneailing Name Number Temperature
℃Type of
coolingTemperature①②③
℃Type of
cooling④X6CrNiNb18-10 1.4550 1150 to 850 air +AT 1020 to 1120 water,air ◎ Temperature of solution annealing shall be agreed for simulated heat-treated test pieces.
① Solution annealing may be omitted if the conditions for hot working and subsequent cooling are such that the requirements for the mechanical properties of the product and the resistance to intergranular corrosion as defined in EN ISO 3651-2 are obtained.
② If heat treatment is carried out in a continuous furnace, the upper part of the range specified is usually preferred, or even exceeded.
③ Lower end of the range specified for solution annealing should be aimed at the heat treatment as part of further processing,because otherwise the mechanical properties might be affected. If the temperature of hot forming does not drop below the lower temperature for solution annealing, a temperature of 980℃ is adequate as a lower limit for Mo-free steels, a temperature of 1000℃ for steels with Mocontents up to 3 % and a temperature of 1020°C for steels with Mo contents exceeding 3 %.
④ Cooling sufficiently rapidly in order to avoid the occurrence of intergranular corrosion as defined in EN ISO 3651-2.
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