Yuhong Holding Group Co., LTD.
Lieu d'origine: | Chine |
Nom de marque: | YUHONG |
Certification: | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
Numéro de modèle: | ASTM A790 S31803 |
Quantité de commande min: | 100 kg |
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Prix: | Négociable |
Détails d'emballage: | paquet Pli-en bois de cas de /Iron de cas avec le chapeau en plastique/caisse tissée |
Délai de livraison: | Dépend de la quantité |
Conditions de paiement: | L / C, T / T |
Capacité d'approvisionnement: | 1000 tonnes par mois |
Norme matérielle: | ASTM A790/ASME SA790 | Numéro UNS: | S31803 |
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Grade équivalent: | EN 1.4462 | UNS S32205 | Duplex 2205 | Type de tuyau: | Sans couture | Soudé |
Niveau de certification: | EN 10204 3.1 | 3.2 | Norsok | Finition de fin: | Coupe ordinaire | Biseauté (30-35 °) | Thread (NPT / BSP) |
Mettre en évidence: | 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:
Personne à contacter: Freya
Téléphone: +8617276485535
Télécopieur: 0086-574-88017980