GB/T 28907-2012
AbolishedSulfuric acid dew-point corrosion resistance steel plates and strips
耐硫酸露点腐蚀钢板和钢带
Catalogue
前言 → 1 范围 → 2 规范性引用文件 → 3 术语和定义 → 4 牌号表示方法 → 5 订货内容 → 6 尺寸、外形、重量及允许偏差 → 7 技术要求 → 8 试验方法 → 9 检验规则 → 10 数值修约 → 11 包装、标志、质量证明书 → 附录A Foreword → 1 Scope → 2 Normative References → 3 Terms and Definitions → 4 Designation Method → 5 Ordering Information → 6 Dimensions, Shape, Weight and Permissible Deviations → 7 Technical Requirements → 8 Test Methods → 9 Inspection Rules → 10 Rounding of Numerical Values → 11 Packaging, Marking and Quality Certificate → Annex A
Scope
This standard specifies the definitions, ordering information, designation method, dimensions, shape, weight and permissible deviations, technical requirements, test methods, inspection rules, packaging, marking and quality certificate for sulfuric acid dew-point corrosion resistance steel plates and strips. This standard applies to sulfuric acid dew-point corrosion resistance steel plates with thickness not greater than 40 mm and sulfuric acid dew-point corrosion resistance steel strips with thickness not greater than 25.4 mm used in power plant chimneys, air preheaters, desulfurization equipment, and tobacco industry curing barns.
本标准规定了耐硫酸露点腐蚀钢板和钢带的定义、订货内容、牌号表示方法、尺寸、外形、重量及允许偏差、技术要求、试验方法、检验规则、包装、标志及质量证明书。本标准适用于电厂烟囱、空气预热器、脱硫装置以及烟草行业烤房等厚度不大于40mm的耐硫酸露点腐蚀钢板和厚度不大于25.4mm的耐硫酸露点腐蚀钢带。
Normative References
Keywords
Application Summary AI generated
Power plants, desulfurization facilities, and tobacco curing operations use this standard to specify and verify steel plates and strips that resist sulfuric acid dew-point corrosion. It sets requirements for chemical composition, mechanical properties, and corrosion rates, ensuring reliable performance in acidic exhaust environments. This standard is critical for extending equipment lifespan, reducing maintenance costs, and ensuring industrial safety.
电厂、脱硫设备及烟草行业等需要抵抗含硫烟气腐蚀的领域，使用该标准来规范耐硫酸露点腐蚀钢板和钢带的生产与检验。该标准通过规定材料的化学成分、力学性能和腐蚀速率要求，确保材料在酸性环境下长期稳定运行。它对于延长设备寿命、减少维护成本、保障工业安全具有重要意义。
AI Summary AI generated
This standard specifies technical requirements for sulfuric acid dew-point corrosion resistance steel plates and strips, including grade designation (e.g., Q315NS), chemical composition (C≤0.15%, Cr 0.30-1.20%, Cu 0.20-0.50%, etc.), mechanical properties (yield strength ≥315 MPa or ≥345 MPa), and corrosion rate criteria. It applies to plates up to 40 mm thick and strips up to 25.4 mm thick used in power plant chimneys and desulfurization equipment. The standard references numerous normative documents covering chemical analysis, mechanical testing, and corrosion test methods.
本标准规定了耐硫酸露点腐蚀钢板和钢带的技术要求，包括牌号表示方法（如Q315NS）、化学成分（C≤0.15%、Cr 0.30-1.20%、Cu 0.20-0.50%等）、力学性能（屈服强度≥315MPa或≥345MPa）及腐蚀速率指标。适用于电厂烟囱、脱硫装置等厚度≤40mm的钢板和≤25.4mm的钢带。标准还列出了大量规范性引用文件，涵盖化学成分分析、力学试验和腐蚀试验方法。
Key Sentences extracted from text
本标准规定了耐硫酸露点腐蚀钢板和钢带的定义、订货内容、牌号表示方法、尺寸、外形、重量及允许偏差、技术要求、试验方法、检验规则、包装、标志及质量证明书。
本标准适用于电厂烟囱、空气预热器、脱硫装置以及烟草行业烤房等厚度不大于40mm的耐硫酸露点腐蚀钢板和厚度不大于25.4mm的耐硫酸露点腐蚀钢带。
钢的牌号由“屈服强度”中“屈”字汉语拼音的首位字母“Q”、屈服强度下限值及耐硫酸露点腐蚀的“耐酸”的汉语拼音的首位字母“NS”组成。
钢板和钢带的力学性能和工艺性能应符合表2的规定。
按照JB/T 7901规定的试验方法，在温度20℃、硫酸浓度20%、全浸24h条件下，腐蚀速率为不大于10mm/a（0.89mg/cm2•h，相对于Q235B腐蚀速率为30%）；在温度70℃、硫酸浓度50%、全浸24h条件下，平均腐蚀速率为不大于250mm/a（22.4 mg/cm2•h，相对于Q235B腐蚀速率为50%）。
This standard specifies the definitions, ordering information, designation method, dimensions, shape, weight and permissible deviations, technical requirements, test methods, inspection rules, packaging, marking and quality certificate for sulfuric acid dew-point corrosion resistance steel plates and strips.
This standard applies to sulfuric acid dew-point corrosion resistance steel plates with thickness not greater than 40 mm and sulfuric acid dew-point corrosion resistance steel strips with thickness not greater than 25.4 mm used in power plant chimneys, air preheaters, desulfurization equipment, and tobacco industry curing barns.
The grade designation of steel consists of the initial letter 'Q' of the Chinese pinyin for 'yield strength', the lower limit of yield strength, and the initial letters 'NS' of the Chinese pinyin for 'acid resistance'.
The mechanical properties and technological properties of steel plates and strips shall comply with the provisions of Table 2.
According to the test method specified in JB/T 7901, under the conditions of temperature 20°C, sulfuric acid concentration 20%, and full immersion for 24 h, the corrosion rate is not greater than 10 mm/a (0.89 mg/cm2·h, relative to Q235B corrosion rate of 30%); under the conditions of temperature 70°C, sulfuric acid concentration 50%, and full immersion for 24 h, the average corrosion rate is not greater than 250 mm/a (22.4 mg/cm2·h, relative to Q235B corrosion rate of 50%).