Welding Electrode
A512 E16-8-2-16 Welding Electrode
A512 E16-8-2-16 is a 16Cr-8Ni-2Mo stainless steel welding electrode for high-temperature welding applications. It produces austenitic weld metal with controlled ferrite for good hot ductility and resistance to weld cracking. Classified under GB/T 983 and corresponding to AWS A5.4 E16-8-2-16, A512 is commonly used for heat-resistant stainless steel piping and industrial equipment.
A512 E16-8-2-16 Welding Electrode
A512 is a specialty stainless steel electrode designed for demanding high-temperature and high-pressure welding applications. Its 16-8-2 weld metal provides a balanced Cr-Ni-Mo composition for heat-resistant austenitic stainless steel applications.
Product Specifications
Item | Specification |
|---|---|
Chinese Grade | A512 |
Classification | E16-8-2-16 |
Standard | GB/T 983 |
AWS Classification | AWS A5.4 E16-8-2-16 |
Product Type | Stainless Steel Welding Electrode |
Weld Metal | 16Cr-8Ni-2Mo Austenitic Stainless Steel |
Coating | Titanium-Calcium |
Welding Current | AC / DC+ |
Typical Diameters | 2.5, 3.2, 4.0, 5.0 mm |
Packaging | Standard Export or Customized |
Base Materials
A512 E16-8-2-16 is commonly used with:
- 16-8-2 stainless steel
- 321 stainless steel
- 347 stainless steel
- Selected 316-series stainless steels
- Austenitic heat-resistant stainless steels
Final electrode selection should be based on the actual base material, service temperature, welding procedure, and project specification.
Typical Applications
A512 is suitable for applications such as:
- High-temperature stainless steel piping
- High-pressure piping
- Boiler and power-generation piping
- Superheater and heat-resistant pipe components
- Petrochemical equipment
- High-temperature industrial equipment
- Maintenance and repair of heat-resistant stainless steel components
Chemical Composition of Deposited Metal
Typical AWS A5.4 requirements for E16-8-2-16 include:
Element | Requirement |
|---|---|
C | ≤ 0.10% |
Mn | 0.50–2.50% |
Si | ≤ 0.60% |
P | ≤ 0.030% |
S | ≤ 0.030% |
Cr | 14.5–16.5% |
Ni | 7.5–9.5% |
Mo | 1.0–2.0% |
Cu | ≤ 0.75% |
These values refer to deposited weld metal. Actual product chemistry should be confirmed against the applicable standard and batch MTC.
Mechanical Properties
Property | AWS A5.4 Requirement |
|---|---|
Tensile Strength | ≥ 550 MPa |
Elongation | ≥ 35% |
Actual test results depend on the product batch and test conditions. MTC documentation can be provided according to customer requirements.
Key Features
- 16Cr-8Ni-2Mo austenitic weld metal
- Good hot ductility
- Resistance to weld and crater cracking
- Controlled ferrite content
- Suitable for high-temperature piping
- Suitable for AC or DC+ welding
- Applicable to heat-resistant stainless steel equipment
FAQ
What is A512 welding electrode?
A512 is the Chinese grade corresponding to GB/T 983 E16-8-2-16, a 16Cr-8Ni-2Mo austenitic stainless steel welding electrode.
What is E16-8-2-16 used for?
E16-8-2-16 is mainly used for high-temperature and high-pressure stainless steel piping and heat-resistant industrial equipment.
What stainless steels can A512 weld?
A512 is commonly associated with 16-8-2, 321, 347 and selected 316-series stainless steels. The final selection should follow the welding procedure and base material requirements.
Can A512 be used with AC?
Yes. A512 E16-8-2-16 is commonly specified for AC or DC+ welding.
Does A512 have an AWS classification?
Yes. E16-8-2-16 is an AWS A5.4 stainless steel electrode classification.
A512 E16-8-2-16 Welding Electrode Supplier
GD WELD supplies A512 E16-8-2-16 welding electrodes for high-temperature piping, power-generation, petrochemical, industrial maintenance, and export applications.
Available diameters, packaging, MTC documentation, and project requirements can be discussed according to your application.
Send us your electrode diameter, quantity, base material, service temperature, and required specification for a quotation.
