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| Standard: | ASME SB677 / ASTM B677 | Material Grade: | UNS NO8904 , 1.4539 , TP904L |
|---|---|---|---|
| Certification: | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 | Type: | Seamless,Welded. |
| Packing: | Ply Wooden Case , Woven Flexible Bag In Hex Bundle | Application: | Petroleum, Petrochemical Equipment, Petroleum, Petrochemi |
| High Light: |
UNS N08904 Seamless Stainless Steel Pipe,1.4539 Stainless Steel Seamless Pipe |
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| Mark | Analogue | W. Nr. | Aisi Uns | En | Order |
|---|---|---|---|---|---|
| 06ХН28МДТ | EI943 | 1.4539 | 904L | X3NiCrCuMoTi27-23 | Delivery from the stock, in stock |
| ~~06ХН28МДТ | 926 | 1.4529 | N08926 | ~X1NiCrMoCuN25-20-7 | Delivery from the stock, in stock |
| ~06ХН28МДТ | 926 | ~1.4529 | ~~904L | X1NiCrMoCuN25-20-7 | Delivery from the stock, in stock |
Mark 06HN28MDT the categories of corrosion-resistant, stainless, ordinary, heat-resistant heat-resistant steel in the austenitic iron-nickel-based. It is melted in electric arc furnaces. There are also other designation EI943 alloy. Substitutes can be 03HN28MDT alloy. Mark 06HN28MDT applied to parts of pipe fittings, and gas turbine engines. It has high resistance to deterioration by heat and low-cycle fatigue. The danger may be aggravated by the destruction of surface reactions that are associated with the softening of grain boundaries, corrosion gas. Ductility, heat resistance, resistance to dynamic and thermal loads, resistance to gas corrosion define the broad scope of this alloy.
ASME SB677 TP904L/1.4539/UNS N08904 Stainless Steel Seamless Pipe
904L stainless steel material is a super austenitic stainless steel material, grade 00Cr20Ni25Mo4.5Cu, UNS: N08904, EN: 1.4539. It is a high alloyed austenitic stainless steel with low carbon content and has good corrosion resistance in dilute acid, designed specifically for environments with harsh corrosion conditions. It has a high chromium content and sufficient nickel content. The addition of copper gives it strong acid resistance, especially high resistance to chloride interstitial corrosion and stress corrosion cracking. It is highly resistant to corrosion spots and cracks, and has slightly better resistance to pitting compared to other steel grades. It has good machinability and weldability. Solid solution state without magnetism.
The chemical composition of 904L is C ≤ 0.03, Si ≤ 1.00, Mn ≤ 2.00, P ≤ 0.035, S ≤ 0.03, Ni: 23.0-25.0, Cr: 18.0-20.0, Mo: 3.0-4.0, Cu: 4.0-5.0. The minimum mechanical properties of 904L alloy at room temperature: alloy and state: 926, tensile strength (Rm N/mm2): 490, yield strength (RP0.2N/mm2): 216, elongation A5%: 35
Grade |
C | Mn | Si | P | S | Cr | Mo | Ni | Cu | |
| 904L | min. max. |
- 0.020 |
- 2.00 |
- 1.00 |
- 0.045 |
- 0.035 |
19.0 23.0 |
4.0 5.0 |
23.0 28.0 |
1.0 2.0 |
Grade |
Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) | Brinell (HB) | ||||
| 904L | 490 | 220 | 35 | 70-90 typical | - |
| Rockwell Hardness value range is typical only; other values are specified limits. | |||||
Grade |
Density (kg/m3) |
Elastic Modulus (GPa) |
Mean Co-eff of Thermal Expansion (m/m/C) | Thermal Conductivity (W/m.K) |
Specific Heat 0-100C (J/kg.K) |
Elec Resistivity (n.m) |
|||
| 0-100C | 0-315C | 0-538C | At 20C | At 500C | |||||
| 904L | 8000 | 200 | 15 | - | - | 13 | - | 500 | 850 |
Grade |
UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
| BS | En | No | Name | ||||
| 904L | N08904 | 904S13 | - | 1.4539 | X1NiCrMoCuN25-20-5 | 2562 | - |
| These comparisons are approximate only. The list is intended as a comparison of functionally similar materials not as a schedule of contractual equivalents. If exact equivalents are needed original specifications must be consulted. | |||||||
| Grade | Why it might be chosen instead of 904L |
| 316L | A lower cost alternative, but with much lower corrosion resistance. |
| 6Mo | A higher resistance to pitting and crevice corrosion resistance is needed. |
| 2205 | A very similar corrosion resistance, with the 2205 having higher mechanical strength, and at a lower cost to 904L. (2205 not suitable for temperatures above 300C.) |
| Super duplex | Higher corrosion resistance is needed, together with a higher strength than 904L. |
| Cr | Ni | Mn | Si | Cu | Mo | FROM | Ti | P | S | Fe |
|---|---|---|---|---|---|---|---|---|---|---|
| 22−25 | 26−29 | 0.8 | 0.8 | 2.5−3.5 | 2,5−3 | 0.06 | 0.5−0.9 | 0.035 | to 0.02 | 36,885−46,5 |
Udelnіy weight 7.96 g / cm³.
The thermal conductivity at t ° 20 ° C = 13,4 * W / (m • K).
The resistivity of the alloy at a temperature of 20 ° C = 0,75 ohm mm2 / m.
Hardness HB of 200 MPa at minus one degree.
The magnetic permeability of the alloy in the field of 500 Oe and at a temperature of 20 ° C = 1,255 micro Tesla per meter.
Produced: trumpet, circle, wire, sheet, 06HN28MDT brand tape. Pull the shoes, stamping, rolling takes place in the temperature range from 1170 ° C to 900 ° C. Alloy is easy to cut. Welded manual and automatic welding using a gas shielded flux. During arc manual welding recommended brands electrodes RLA-17U or RLA-37−2 and wire rod St-OZHN25MDGB or St-03HN25MDG. The same filler material is recommended when cooking argon. As the flux - the best brand of AN-18.
| t ° | E 10 — 5 | a June 10 | Heat capacity | Density |
|---|---|---|---|---|
| hail | MPa | 1 / Grad | W / (mxgrad) | g / cm 3 |
| 20 | 13 | 7.96 | ||
| 200 | 1.86 | 12.9 | 15 | |
| 400 | 1.71 | 14.4 | 7.78 | |
| 600 | 1.56 | 15.3 | 24 | |
| 800 | 1.45 | 16.3 | 26 | 7.59 |
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