China DN8-DN5000 ASTM A182 F51/S31803 (2205) Duplex Steel Flange, Find details about China High Pressure, Stainless Steel from DN8-DN5000 ASTM A182 F51/S31803 (2205) Duplex Steel Flange
Table 1: Chemical composition, UNS S31803
C | Si | Mn | P | S | Ni | Cr | Mo | Al | Ti | |
Min | - | - | - | - | - | 4.5 | 21 | 2.5 | - | - |
Max | 0.03 | 1 | 2 | 0.03 | 0.02 | 6.5 | 23 | 3.5 | - | - |
Nb(Cb) | Cu | Co | B | Fe | W | V | N | O | PREN | |
Min | - | - | - | - | Bal | - | - | 0.08 | - | 31 |
Max | - | - | - | - | - | - | - | 0.2 | - | 38 |
Pitting index PREN = %Cr + 3.3 (%Mo +0.5%W) + 16%N |
Mechanical properties | -40ºC | 20ºC | 200ºC |
Tensile strength, yield (min.) | - | 758 MPa (110ksi) | - |
Tensile strength, yield (typical) | - | - | - |
Tensile strength, ultimate (min.) | - | 862 MPa (125ksi) | - |
Tensile strength, ultimate (typical) | - | - | - |
Tensile modulus (typical) | - | 198 MPa | 184 MPa |
Torsion modulus (typical) | - | - | - |
Yield point (Mpa)min | 450 | ||
Elongation (min.) | - | 12% | - |
Red. of area (min.) | - | - | - |
Charpy V-notch impact (typical) | - | - | - |
Fracture toughness KIC (typical) | - | - | - |
Hardness (ISO 15156-3 limit) | - | See below | - |
Hardness (typical) | - | See below | - |
Fatigue strength (% of T.S.U.) | - | - | - |
Grade | Delivery condition | HRC (max) available | HRC (max) ISO 15156-3 |
65 | SA | 26 | 36 |
110 | CW | 36 | 36 |
125 | CW | 37 | 36 |
140 | CW | 38 | 36 |
Zhejiang Chengyuan Flange Pipe Fitting Co., Ltd. is located in Wenzhou Economic and Tech Development Zone. We are a high-tech company that specializes in research and development, technologies, manufacturing and sales of stainless steel, carbon steel, alloy, duplex steel, flange, valve products, etc. Our factory has the latest finishing equipment and inspection devices.
Our products include Mini ball valve, Tubular ball valve, Chip ball valve, Flange ball valve, Three-way ball valve, gate valve, globe valve, strainer, check valve, pneumatic operated valve, electric operated valve,
PL, Plate flat welding flange
SO, Flat welding flange with neck
WN, Butt welding flange with neck
IF, integral pipe flange
SW, socket welding flange
BLFlange cover
All our products strictly follow the standards of GB, SHJ, HGQ, ANSI, JIS, DIN, ISO, GOST, API and so on. We strictly follow the requirements of ISO9001 management system, because we believe that it is our duty to be responsible for our customers.
Q1:Canyou provide a sample before a bigorder?
A:Yes,we can.
Q2:Whether there are some discount for large quantities or not?
A:TO be honest we not only offer discounts to you because of quantity but also discounts to you when we do the promotion during flange purchase season.
Q3:If products have some quality problem ,how would you deal with?
A:Normally all our products get quality check and pressure testing before shipment It quality problem due to wrong use, we will suggest some solution but not take cost,lf it is products quality due to our production, we will provide solution and take related repaircost.
Q4:How long is your delivery time?
A:Generallyit depends on quantity and products types. If goods are in stock, the delivery time is within one week. It will be 25-45daysifitis
Q5:What is your payment term?
A:TT30% for deposit,balance to be paid before shipment.or L/C
Q6: Do you offer customizationg or OEM service?
A:Of course, Itis custonmlzation when we finish production according to customer's
requlrements lf brand OEM, please offer the brand letter of authorization to me for exporting la