ASME SA423 GR.1 Low Alloy Steel Seamless Boiler Tubes For Superheater Water Wall
Price:
Negotiable
MOQ:
200~500 KGS
Delivery Time:
35-60 Days (Depend on Customer's Requirements)
Brand:
YuHong
Product Description
ASME SA423 GR.1 Low Alloy Steel Seamless Boiler Tubes For Superheater Water Wall
Product Description
ASME SA423 Grade 1 Electric Resistance Welded (ERW) tube is a low-alloy steel tube manufactured using the electric resistance welding process. This specification covers low-alloy steel tubes designed for high-temperature and high-pressure service, particularly in boilers and heat exchangers, with excellent resistance to atmospheric corrosion.
Material Composition
| Composition, % | Grade 1 | Grade 2 | Grade 3 |
|---|---|---|---|
| Carbon, max | 0.15 | 0.15 | 0.15 |
| Manganese | 0.55 max | 0.50-1.00 | 0.70-1.40 |
| Phosphorus | 0.06-0.16 | 0.04 max | 0.020 max |
| Sulfur, max | 0.060 | 0.05 | 0.020 |
| Silicon | 0.10 min | ... | 0.55 max |
| Copper | 0.20-0.60 | 0.30-1.00 | 0.25-0.45 |
| Chromium | 0.24-1.31 | ... | ... |
| Nickel | 0.20-0.70 | 0.40-1.10 | 0.50 max |
| Molybdenum | ... | 0.10 min | 0.20 max |
| Antimony | ... | ... | 0.05-0.15 |
Mechanical Properties
| Property | Grades 1 and 2 | Grade 3 |
|---|---|---|
| Tensile Strength | 415 MPa (60,000 psi) | 380 MPa (55,000 psi) |
| Yield Strength | 255 MPa (37,000 psi) | 230 MPa (33,000 psi) |
| Elongation, min (%), (in 50 mm / 2 in) | 25 | 35 |
| Hardness (Brinell/Rockwell) | ≤ 170 HBW / ≤ 87 HRB | |
Standards & Specifications
- ASME SA423: Standard specification for seamless and welded low-alloy steel tubes for boilers and superheaters
- Grade 1: Optimized for high-temperature service applications
- Complies with ASME Boiler and Pressure Vessel Code (BPVC) Section II for material properties
Testing & Inspection
- Hydrostatic testing, ultrasonic testing (UT), or eddy current testing to ensure weld integrity
- Chemical and mechanical property verification per ASTM/ASME standards
Key Advantages
- Cost-Effective: More economical than seamless tubes while maintaining high strength and durability
- High-Temperature Resistance: Chromium-molybdenum (Cr-Mo) alloy provides excellent creep resistance up to 450°C (850°F)
- Good Weldability: ERW process ensures strong, uniform welds without filler metals
- Consistent Quality: Precise dimensional control for reliable performance in pressure applications
- Corrosion Resistance: Resists oxidation and scaling in steam/high-heat environments
- ASME Compliance: Meets strict Boiler & Pressure Vessel Code standards for safety
Primary Applications
- Power Generation: Boiler tubes in thermal power plants, superheaters & reheaters, heat exchangers & condensers
- Oil & Gas / Petrochemical: Refinery heat exchangers, high-temperature pipelines, furnace components
- Industrial Process Equipment: Chemical processing units, pressure vessels, thermal fluid systems
- District Heating Systems: Hot water supply pipelines, steam distribution networks
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Company
YUHONG HOLDING GROUP CO., LTD
Location
20 Floor, No.1 New World Building, NO.1018 Min'an Road, Yinzhou District, Ningbo, China, ZIP:315040
Contact Person
Sales Dept.