Yuhong Holding Group Co., LTD
Menşe yeri: | Çin |
Marka adı: | YUHONG |
Sertifika: | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
Model numarası: | ASTM A790 S31803 |
Min sipariş miktarı: | 100kgs |
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Fiyat: | Anlaşılabilir |
Ambalaj bilgileri: | Kontrplak Kasa / Demir Kasa / Plastik Kapaklı Paket / Dokuma Kasa |
Teslim süresi: | Miktara bağlıdır |
Ödeme koşulları: | L/C, T/T |
Yetenek temini: | Ayda 1000 ton |
Malzeme Standardı: | ASTM A790 / ASME SA790 | UNS Numarası: | S31803 |
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Eşdeğer Sınıf: | EN 1.4462 | UNS S32205 | Dubleks 2205 | Boru tipi: | Kesintisiz | Kaynaklı |
Sertifikasyon seviyesi: | EN 10204 3.1 | 3.2 | Norsok | Bitiş Bitiş: | Düz kesim | Eğimli (30-35 °) | Dişli (NPT/BSP) |
Vurgulamak: | ASTM A790 duplex stainless steel pipes,EN 10204 3.2 certified S31803 pipes,UNS S31803 seamless stainless pipes |
ASTM A790 S31803 Duplex Stainless Steel Pipe | UNS S31803 | High Strength Corrosion Resistant Pipes
Meta Description:
Manufacturer of ASTM A790 S31803/2205 duplex steel pipes. Certified EN 10204 3.1, 100% hydro tested, PREN >38. Ideal for offshore, chemical & oil/gas. Request specs.
Our ASTM A790 seamless duplex pipes (UNS S31803) combine austenitic and ferritic microstructures, delivering 2x the yield strength of 316L stainless steel with exceptional chloride stress corrosion cracking (SCC) resistance. Ideal for high-pressure, corrosive environments.
Key Advantages:
Table: Balanced Chemistry of S31803 Duplex Steel Pipe
Element | Min | Max | Target | Role in Performance |
---|---|---|---|---|
Cr | 21.0 | 23.0 | 22.0 | Pitting/Corrosion Resistance |
Ni | 4.5 | 6.5 | 5.5 | Austenite Stability |
Mo | 2.5 | 3.5 | 3.0 | Chloride Resistance |
N | 0.08 | 0.20 | 0.15 | Strength & PRE Boost |
Mn | - | 2.0 | 1.2 | Deoxidation |
C | - | 0.030 | 0.02 | Weldability |
S | - | 0.020 | 0.001 | Machinability |
P | - | 0.030 | 0.025 | - |
Fe | Balance |
Table: Cross-Standard Material Equivalents
Standard | Grade | Common Name | Similarity |
---|---|---|---|
UNS | S31803 | Duplex 2205 | Identical |
EN | 1.4462 | X2CrNiMoN22-5-3 | Direct Equivalent |
ASME | SA790 | - | Parent Spec |
GOST | 03Kh22N6M2 | - | Comparable |
JIS | SUS 329J3L | - | Near Match |
Table: Room-Temperature Mechanical Properties per ASTM A790
Property | Requirement | Typical Value | Advantage vs. 316L |
---|---|---|---|
Tensile Strength | ≥ 620 MPa | 750-895 MPa | +40% Higher |
Yield Strength (0.2%) | ≥ 450 MPa | 550-625 MPa | 2x Higher |
Elongation (%) | ≥ 25% | 28-35% | Superior Ductility |
Hardness (Rockwell C) | ≤ 32 HRC | 28-32 HRC | Optimal for Sour Service |
Impact Toughness | ≥ 100 J (-50°C) | ≥140 J | Arctic Readiness |
Table: Permissible Variations per ASTM A790/ASME B36.19
Parameter | Tolerance (Seamless Pipe) | Critical Application Focus |
---|---|---|
OD (Outer Diameter) | ±0.8% or ±0.2mm* | Fitting Compatibility |
Wall Thickness | +20% / -12.5% | Pressure Integrity |
Straightness | ≤ 0.2% of length | Offshore Installation |
Cut Length | +3mm / -0mm | Welding Efficiency |
Corrosion-Demanding Environments:
İlgili kişi: Freya
Tel: +8617276485535
Faks: 0086-574-88017980