low temperature steel
Category: Low-temperature steel welding rod
Type: E8015-C1
Diameter: 2.5m, 3.2mm, 4.0mm, 5.0mm
Welding current: International standard
AWS E8015-C1 Low-temperature steel welding electrode
Specially designed for -60℃ low-temperature environment, iron powder low-hydrogen potassium type coated electrode, all-position welding, excellent low-temperature toughness and process performance
Product Overview
AWS E8015-C1 is a low-temperature steel electrode with iron powder low hydrogen potassium coating, suitable for AC and DC all-position welding. The deposited metal still has excellent impact toughness at -60℃, and is particularly suitable for welding low-alloy steel structures working in low temperature environments, such as 13MnSi6, 09MnNiNb, E36 and other steels.
Features:
- Excellent low temperature toughness
-60℃ impact energy ≥27J, ensuring structural safety in low temperature environment
- All-position welding
Can be welded in various positions such as horizontal, vertical, horizontal, and vertical
- Excellent process performance
Stable arc, small spatter, easy slag removal, beautiful weld formation
- High strength matching
Deposited metal tensile strength ≥550MPa, meeting high-strength structural requirements
Professional advice
For steel structures working in low temperature environments, it is recommended to use AWS E8015-C1 welding rod to ensure the safety and reliability of welded joints under extreme temperature conditions.
Chemical composition (%)
| Element | C | Mn | Si | S | P | Ni |
|---|---|---|---|---|---|---|
| Guaranteed value | ≤0.12 | ≤1.25 | ≤0.60 | ≤0.035 | ≤0.035 | 2.00~2.75 |
| Typical value | 0.057 | 0.90 | 0.30 | 0.006 | 0.015 | 2.50 |
Mechanical properties
| Test items | Tensile strength Rm (MPa) | Yield strength ReL (MPa) | Elongation A (%) | Impact energy KV2 (J)@-70℃ |
|---|---|---|---|---|
| Guaranteed value | ≥550 | ≥440 | ≥17 | ≥27 |
| Typical value | 610 | 520 | 28 | 90 |
Specifications and dimensions
| Welding rod diameter (mm) | Length (mm) | Welding current (A) | Packaging weight |
|---|---|---|---|
| 2.5 | 300 | 60~90 | 5kg/box |
| 3.2 | 350 | 90~120 | |
| 4.0 | 400 | 140~180 | |
| 5.0 | 400 | 170~210 |
Application fields
AWS E8015-C1 low temperature steel welding rod is mainly used for welding low alloy steel structures with working temperature as low as -60℃ and is widely used in many industrial fields.
Energy industry
Liquefied natural gas (LNG) storage tanks, cryogenic pipelines
Shipbuilding industry
Cryogenic ship structures, polar research vessels
Pressure vessels
Cryogenic pressure vessels, cryogenic storage tanks
Bridge engineering
Steel structures of bridges in cold regions
Welding process
Preparation before welding
1. Drying of welding rod: bake at 350℃ for 1 hour, use immediately after baking
2. Cleaning of base material: remove rust, oil, water and other impurities
3. Preheating requirements: preheat at 80-150℃ according to the thickness of the plate
Welding parameters
- Use short arc operation and narrow pass welding
- Interlayer temperature is controlled below 200℃
- After welding, 600-650℃ tempering treatment can be performed to eliminate stress
Precautions
- Reverse DC connection (welding rod connected to positive pole)
- Avoid welding in an environment with wind speed exceeding 8m/s, and take windproof measures if necessary
- The cooling speed after welding should not be too fast to prevent cold cracks
Production Process
We use advanced production technology and strict quality control system to ensure that each batch of welding rods meets high standards.
Raw material mixing
Precisely proportion various alloy elements and coating components
Core wire preparation
High-purity steel wire drawing and forming
Coating
Evenly coat the coating to ensure consistent coating thickness
Drying and curing
Multi-stage temperature-controlled drying oven to ensure that the moisture content of the coating meets the standard
Quality inspection
Chemical composition analysis, mechanical properties test, X-ray flaw detection
Packaging and storage
Moisture-proof packaging to ensure product storage stability
FAQ
Q: What is the difference between AWS E8015-C1 welding rod and E7018?
A: AWS E8015-C1 is a low-temperature steel welding rod designed for -60℃ environment, containing 2-2.75% Ni element to improve low-temperature toughness; while E7018 is a common low-hydrogen welding rod, mainly used for normal temperature structural steel welding, with lower strength grade and low-temperature performance than E8015-C1.
Q: How to properly store AWS E8015-C1 welding rod?
A: The welding rod should be stored in a dry and ventilated environment with relative humidity ≤60% and temperature ≥5℃. The unused welding rod should be resealed after opening, and it needs to be re-dried if it is not used for more than 4 hours, but the number of repeated drying should not exceed 2 times.
Q: Is this welding rod suitable for high-pressure and low-temperature container welding?
A: Yes, AWS E8015-C1 complies with AWS A5.5 standard, has passed ISO9001:2008 quality certification, and is suitable for pressure vessel welding with a design temperature of -60℃. After welding, it is recommended to perform X-ray flaw detection (Level I standard) and post-weld heat treatment.
Q: What are the causes and solutions for pores during welding?
A: The main causes of pores include: 1) The electrode is not fully dried; 2) The surface of the parent material is not thoroughly cleaned; 3) The welding speed is too fast; 4) The arc is too long. Solution: Ensure that the electrode is dried at 350℃ for 1 hour, thoroughly clean the oil, rust and iron stains of the parent material, control the welding speed, and use short arc operation.
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