ASTM A213 / ASME SA213 T91 Alloy Steel Tubes Suppliers
Alloy Steel T91 Tubes are widely used in high-temperature and high-pressure environments, making them an essential component in industries like power generation, petrochemicals, and refineries. These tubes are engineered to withstand extreme conditions while maintaining excellent mechanical properties. Manufactured as per ASTM A213 and ASME SA213 standards, these seamless tubes offer superior durability, corrosion resistance, and thermal stability.
What is Alloy Steel T91?
Alloy Steel T91, also known by its UNS designation K90901, is an Alloy Steel Product made from Chromium-Molybdenum (Cr-Mo) steel that exhibits excellent strength, oxidation resistance, and creep resistance. The combination of chromium and molybdenum enhances its high-temperature performance, making it ideal for boiler tubes, heat exchangers, and superheater tubes.
Specifications and Standards
Alloy Steel T91 Tubes are produced in compliance with various international standards to meet industry requirements:
- ASTM A213 T91 Alloy Steel Seamless Tube
- ASME SA213 T91 Alloy Steel Seamless Tube
- Alloy Steel Grade T91 Seamless EN 10216-2 Tubes
- ASTM A213 / ASME SA213 T91 SMLS Tubes & Pipes Suppliers
These specifications ensure that the tubes are capable of withstanding extreme conditions while maintaining structural integrity.
Key Features of ASTM A213 / ASME SA213 T91 SMLS Tubes
- High Strength & Durability – ASME SA213 T91 Alloy Steel Seamless Tube exhibits superior tensile strength, ensuring long service life in demanding applications.
- Corrosion & Oxidation Resistance – The chromium content provides excellent resistance to oxidation and corrosion at high temperatures.
- Creep Resistance – Molybdenum enhances the tube’s resistance to creep deformation under high stress and temperature conditions.
- Excellent Weldability – These tubes can be easily welded using standard welding processes.
- Thermal Stability – Alloy Steel Grade T91 Seamless EN 10216-2 Tubes maintain their mechanical properties even at elevated temperatures.
Advantages of Using Alloy Steel Grade T91 Seamless EN 10216-2 Tubes
- Long Service Life – Due to their durability and resistance to wear and tear.
- High-Temperature Performance – Ideal for extreme heat applications.
- Cost-Effective – Lower maintenance and replacement costs.
- Enhanced Safety – Resistant to thermal expansion and pressure fluctuations.
Schedule and Size Chart for Alloy Steel UNS K90901 Seamless Tubes
| Schedule | Outer Diameter (OD) | Wall Thickness (WT) |
| SCH 10 | 1/2″ – 24″ | 1.65mm – 5.74mm |
| SCH 20 | 1/2″ – 24″ | 2.11mm – 6.35mm |
| SCH 40 | 1/2″ – 24″ | 2.77mm – 8.74mm |
| SCH 80 | 1/2″ – 24″ | 3.73mm – 12.70mm |
| SCH 160 | 1/2″ – 24″ | 4.78mm – 21.44mm |
| XXS | 1/2″ – 24″ | 5.56mm – 26.19mm |
Mechanical Properties of ASTM A213 T91 Alloy Steel Seamless Tube
The mechanical properties of Alloy Steel T91 Seamless Tubes ensure their reliability in critical applications:
| Property | Value |
| Tensile Strength | ≥ 585 MPa |
| Yield Strength | ≥ 415 MPa |
| Elongation | ≥ 20% |
| Hardness | ≤ 250 HB |
Chemical Composition of ASME SA213 T91 SMLS Tubes
The chemical composition of SA 213 T91 Tube plays a crucial role in determining its performance characteristics:
| Element | Composition (%) |
| Carbon (C) | 0.08 – 0.12 |
| Manganese (Mn) | 0.30 – 0.60 |
| Phosphorus (P) | ≤ 0.020 |
| Sulfur (S) | ≤ 0.010 |
| Silicon (Si) | 0.20 – 0.50 |
| Chromium (Cr) | 8.00 – 9.50 |
| Molybdenum (Mo) | 0.85 – 1.05 |
| Vanadium (V) | 0.18 – 0.25 |
| Nitrogen (N) | 0.030 – 0.070 |
Physical Properties of Alloy Steel T91 Tubes Distributors
| Property | Value |
| Density | 7.8 g/cm³ |
| Melting Point | 1425°C – 1470°C |
| Thermal Conductivity | 26.0 W/m·K |
| Specific Heat Capacity | 460 J/kg·K |
| Coefficient of Thermal Expansion | 12.2 µm/m·°C |
Applications of Alloy Steel T91 Tubes
Due to their superior properties, Alloy Steel T91 Tubes are widely used in several industries:
- Power Plants – Boiler and superheater tubes
- Petrochemical & Refining – Heat exchangers and high-pressure piping
- Aerospace & Marine – High-temperature structural components
- Oil & Gas – High-pressure tubing in drilling applications
- Chemical Processing – Corrosion-resistant tubing for chemical plants
Why Choose ASC LLP for Alloy Steel T91 Tubes?
ASC LLP is one of the leading Alloy Steel T91 Tubes Distributors and suppliers, offering high-quality tubing solutions to industries worldwide. We provide:
- Premium Quality Assurance – All our tubes meet international standards.
- Competitive Pricing – Cost-effective solutions without compromising quality.
- Fast & Reliable Delivery – Ensuring timely supply for critical projects.
- Custom Sizes & Specifications – Tailored solutions to meet customer requirements.
Chromium Molybdenum Steel T91 Tubing is a vital component in industries requiring high-strength, corrosion-resistant, and heat-resistant materials. Manufactured as per ASTM A213 / ASME SA213 T91 SMLS Tubes & Pipes Suppliers, these tubes deliver exceptional performance in power plants, refineries, and chemical industries.
Global Reach
Amardeep Steel Centre boasts a robust global presence, committed to delivering unparalleled service and quality to clients around the world. Our dedication to prompt delivery and exceptional customer care sets us apart in the industry. Major corporations across the USA, Europe, Asia, and other regions place their trust in our high-quality 253MA Plates. This widespread trust underscores our reputation for reliability and excellence. By consistently meeting and exceeding the expectations of our international clientele, we continue to solidify our position as a leader in the global steel market.
Countries We Export To
UNITED STATES, EUROPE, UK, UAE, SAUDI ARABIA, OMAN, KUWAIT, JORDAN, QATAR, INDONESIA, MALAYSIA, BRAZIL, SPAIN, ITALY, FRANCE, GERMANY, BAHRAIN, SRI LANKA, AZERBAIJAN, AUSTRALIA, AUSTRIA, PHILIPPINES, TURKEY, RUSSIA, IRAN, IRAQ, CANADA, KOREA, JAPAN, YEMEN, FINLAND, ZIMBABWE, HUNGARY, PORTUGAL, VIETNAM, MOROCCO, THAILAND, SOUTH AFRICA, MEXICO, SINGAPORE, GREECE, KUWAIT, POLAND, NEW ZEALAND, SWEDEN, SWITZERLAND, BELGIUM, BHUTAN, BANGLADESH, TAIWAN, ROMANIA, CAMBODIA, KAZAKHSTAN, AFGHANISTAN.
