| R310 | According with GB E5500-B2-V |
| Introduction: R310 is a kind of Cr1%-Mo0.5%-V pearlitic heat-resistant steel electrode with special coating. AC/DC. All-position welding. It has excellent blowhole-resistance, cold bend plasticity. The weldments should be given preheating and postweld heat treatment according their structural features. |
| Uses: Used for welding pearlitic heat-resistant steel below 540℃ (such as 12CrMoV), such as high temperature high pressure boiler pipes, equipment for petroleum cracking, chemical equipment for high temperature synthesis, etc. |
Chemical Composition of Deposited Metal (%)
| Chemical Composition | C | Mn | Si | S | P | Mo | Cr | V | | Guarantee Value | 0.05~0.12 | ≤0.90 | ≤0.60 | ≤0.035 | ≤0.035 | 0.40~0.65 | 1.00~1.50 | 0.10~0.35 | |
Mechanical Properties of Deposited Metal
| Test Item | Rm(MPa) | ReL或Rp0.2(Mpa) | A(%) | KV2(J) | | Guarantee Value | ≥540 | ≥440 | ≥16 | —(normal temperature) | | General Result | 550~650 | ≥450 | ≥18 | ≥60 | |
X-ray Radiographic Inspection:ⅡDegree |
Reference Current(AC, DC+)
| Electrode Diameter(mm) | φ2.5 | φ3.2 | φ4.0 | φ5.0 | | Welding Current (A) | 60~90 | 90~120 | 140~180 | 180~220 | |
Instructions:
The stains on the weldments, such as rust, oil stains, moisture, etc., must be cleared away before welding. |
