1.Inlet conditions 介质特性
钢板供应商提供的钢板必须满足以上介质特性。
2.钢板及其试验应满足以下标准:
NACE MR0103 : Materials resistant to Sulfide Stress Cracking in Corrosive Petroleum Refining Environments
NACE MR0175/ISO 15156: Standard Material Requirements-Sulfide Stress Cracking Resistant Metallic Materials for Oil Field Equipment
NACE TM0177: Laboratory Testing of Metals for Resistance to Sulfide Stress Cracking and Stress Corrosion in H2S Environments
NACE TM0284: Evaluation of pipeline and pressure vessal steels for resistance to hydrogen-induced cracking
材质证书根据 BS EN 10204 Type 3.1.
以上标准必须采用最新标准,中文与英文有矛盾处以英文为准。所有提供文件及报告至少为中英文版本。
This specification is provided description for purchasing plates material.
本技术条件提供了钢板材料采购的说明
1. Quantity: 294,016kg
数量:
2. Dimension:
尺寸 如5表
3. Name of material:
材料名称
Pressure vessel plates, carbon steel, for moderate-and lower-temperature service.
中、低温压力容器用碳素钢钢板
4. Specification designation
标准名称
ASME Code Sect. II 2015, SA-516 Gr.70 N (R-HIC)
ASME规范第II卷,2015,SA-516 Gr.70 N(R-HIC)标准。
5. Supply condition and dimensional tolerance
供货状态及尺寸公差: 钢板的宽度方向不允许负偏差,对角线长度公差不大于20mm。
交货状态: Normalization: 正火
6. Manufacture
制造
Steel shall be made by basic oxygen or electric furnace methods, fully killed, with a fine grain ractice. Steel shall be processed using inclusion shape control to minimize the occurrence of elongated nonmetallic inclusions and shall be processed using electroslag remelting process to minimize the occurrence of sulfide. Macroscopic test shall be performed as per ASTM E381.White flakes, cracks and gas holes etc. is not allowed inside the material.Grain size shall be tested as per ASTM E112 . Grain size shall be according to original austenite gain. The average grain shall meet the requirement of level 8 or above.
钢可由碱性吹氧转炉或电炉法制造,必须是晶粒度良好的镇静钢。低倍检测根据标准ASTM E381,白点,裂纹,气孔不允许在钢板中。晶粒度检测根据ASTM E112,奥氏体晶粒度等级为8级或8级以上。为改善HB,HIC和SSC的能力,非金属夹杂A,B,C,D四种类型分别不超过2级总量不超过4级,该测试应根据ISO4967或ASTM E45的具体要求准确评估,试样每炉取一个试样,并出具合格报告。罐体的板材(顶部、外壳等)要在酸性条件下进行100%的超声检测无损检测(盲点不允许)。根据ASME SA-435 验收标准,指定一个75mm的格子。当壳体板材出现沟槽,UT测试应在距沟槽50mm的范围内进行(包括开槽的喷嘴)。沟槽表面应用磁粉或液体渗透无损测试。
7. Chemical composition requirements
化学成分要求
Each heat shall be processing heat-analysis and product-analysis and be reported. If the chemical composition of one heat shall not meet the requirement, all the steels from this heat shall be rejected.
每炉批钢板的化学分析应符合下表化学成分的要求(容炼和成品分析), 如果不能满足要求, 所有的将拒绝
Elements
元素
|
Heat analysis 熔炼分析
Composition. 成份 %
|
Carbon, max 最大含碳量
Manganese 最大含锰量
Phosphorus, max. 最大含磷量
Sulfur, max. 最大含硫量
Silicon 含硅量
|
0.2
0.85~1.2
0.015
0.003
0.15-0.40
|
Unspecified elements on heat analysis shall conform to the chemical composition requirements shown in the following table (SA-20M, Table 1):
未规定元素熔炼分析含量应符合下表化学成份的要求
Elements
元素
|
Heat analysis 熔炼分析
Composition. 成份 %
|
Copper, max. AD 最大含铜量
Nickel, max. AD 最大含镍量
Chromium, max.AB 最大含铬量
Molybdenum, max.AB 最大含钼量
Vanadium, max. CE 最大含钒量
Niobium, max. CE 最大含铌量
Titanium, max. E 最大含钛量
Aluminium, max. D 最大含铝量
Nitrogen, max. D 最大含氮量
Boron, max. E 最大含硼量
|
0.30
0.43
0.30
0.08
0.04
0.05
0.03
0.02~0.06
0.012
0.0005
|
Note:
A The sum of copper, nickel, chromium and molybdenum shall not exceed 1.00% on heat analysis.
Cu、Ni、Cr及Mo含量总和不应超过0.8%(熔炼分析)
B The sum of chromium and molybdenum shall not exceed 0.32% on heat analysis.
Cr、Mo元素含量总和不应超过0.32%(熔炼分析)
C The sum of Vanadium and Columbium shall not exceed 0.03% on heat analysis.
V、Nb元素含量总和不应超过0.10%(熔炼分析)