GB/T 17854-2018 in English
VALIDSolid wire electrodes/flux combinations for submerged arc welding of stainless steels
- Issued on:2018-03-15
- Implemented on:2018-10-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$127.00
《GB/T 17854-2018埋弧焊用不锈钢焊丝-焊剂组合分类要求》由TC55（全国焊接标准化技术委员会）归口，TC55SC1（全国焊接标准化技术委员会焊接材料分会）执行，主管部门为国家标准化管理委员会。
Introduction
Interpretation of the classification requirements of stainless steel welding wire-flux combinations for submerged arc welding
Analysis of standard formulation background and technological evolution
The National Standard of the People's Republic of China GB/T 17854-2018 "Classification Requirements of Stainless Steel Welding Wire-Flux Combinations for Submerged Arc Welding" is a comprehensive revision of the original standard GB/T 17854-1999. The main background of this revision includes:
- In line with international standards, adopt the technical specifications of JIS Z 3324:2010
- Adapt to the progress of welding technology and the development needs of stainless steel materials
- Optimize the standard system structure and improve the scientificity and practicality of the standard
Comparison of classification methods and frameworks
| Dimensions | Classification method of 1999 version | Classification method of 2018 version | Explanation of improvements |
|---|---|---|---|
| Chemical composition of deposited metal | Simple classification according to Cr and Ni content | Refine the classification to specific grades, and add requirements for trace elements such as Mo and Cu | Improve the accuracy and applicability of material properties |
| Mechanical properties indicators | Uniformly stipulate tensile strength and elongation | Formulate differentiated technical requirements according to brand | Adapt to the needs of different application scenarios |
| Process parameter range | Wide range, lack of specificity | Refine process conditions and increase heat treatment specifications | Ensure the stability of welding quality |
Analysis of main technical indicators
Requirements for chemical composition of deposited metal
Table 1 specifies the chemical composition range of various weld metals, including the maximum and minimum values of elements such as carbon (C), manganese (Mn), and silicon (Si). For example:
- F308L: Ni content 9.0%~12.0%, Cr content 18.0~21.0%
- F347L: Ni content 9.0~11.0%, containing Nb elements
- F2594: Cu content 1.2~2.0%, N content 0.20~0.30%
Mechanical property requirements
Table 2 lists the tensile strength and elongation indexes of different weld metals. For example:
- F410: tensile strength ≥440MPa, elongation after fracture ≥15%
- F2209: tensile strength ≥690MPa, elongation after fracture ≥15%
Implementation suggestions
- Welding wire and flux selection: According to the specific welding conditions and material requirements, select a matching welding wire-flux combination
- Process parameter control: Strictly abide by the welding specifications specified in Table 3 to ensure welding quality and efficiency
- Quality inspection: Carry out chemical composition, mechanical properties and corrosion resistance tests according to standard requirements to ensure compliance with technical indicators
- Maintenance: Regularly check the welding equipment to ensure its normal operation
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