00Cr25Ni6.5Mo3.5CuN
00Cr25Ni6.5Mo3.5CuN Chemical composition:
Cr | Ni | Mo | Cu | N | C | Si | Mn | S | P | |
Min | 24 | 5.6 | 3 | 0.5 | 0.2 | ≤ | ||||
Max | 26 | 8 | 4 | 2 | 0.35 | 0.03 | 0.8 | 1.5 | 0.02 | 0.035 |
00Cr25Ni6.5Mo3.5CuNPhysical properties:
densityp /g ·cm- | Specific heat capacityJ/kg·℃ | Wire expansion system/×10-6℃-1 | Thermal conductivity/W·(m·℃)-1 | Elastic modulus/MPa | |||||||
20℃ | 100℃ | 200℃ | 20~100 | 20~200 | 20℃ | 100℃ | 200℃ | 20℃ | 100℃ | 200℃ | |
7.8 | 450 | 510 | 530 | 14.0 | 14.5 | 17 | 18 | 19 | 205000 | 195000 | 185000 |
00Cr25Ni6.5Mo3.5CuNMechanical properties:
temperature/℃ | σb/MPa | σp0.2/MPa | δ₅/% | Ak/J | hardness(HRC) |
20 | 840 | 650 | 30 | 120 | 25 |
100 | 720 | 525 | 30 | ||
200 | 700 | 470 | 30 | ||
-20 | —- | —— | 100 | ||
-50 | 80 |
00Cr25Ni6.5Mo3.5CuNAlloy properties:
The steel also has a duplex structure of α/γ close to 1 in the structure suitable for solution treatment, but according to the continuous cooling curve of this steel, there will be intermetallic phases such as σ and x.
00Cr25Ni6.5Mo3.5CuNUses of alloys:
It is mainly used in petrochemical, fertilizer and papermaking and hydrometallurgical industries to manufacture towers, tanks, pipelines, containers, heat exchangers, etc., to solve the problems of uniform corrosion and pitting, crevice corrosion and abrasion of sulfuric acid, phosphoric acid and chloride-containing media.
00Cr25Ni6.5Mo3.5CuNProcess performance:
Welding process: This steel can be welded using the same process as conventional stainless steel, but GMAW, GTAW, and manual arc welding are more commonly used.
Heat treatment: The heat treatment process of this steel is heated at 1100 °C, and then quenched after heat preservation. For medium and extra-thick plates with a thickness of 35 mm and 150 mm, the cooling rate (middle part of the plate) of this steel needs to be ≥ 5000°C/h to obtain an impact energy of -50°C≥ 50J without intermetallic phase precipitation.
Relevant standards:ASTM A182/A182M-2018