00Cr25Ni7Mo4N
00Cr25Ni7Mo4N Chemical composition:
Ni | Cr | Mo | N | C | Si | Mn | S | P | |
Min | 6 | 24 | 3 | 0.24 | ≤ | ||||
Max | 8 | 26 | 5 | 0.32 | 0.03 | 0.8 | 1.2 | 0.02 | 0.03 |
00Cr25Ni7Mo4N Physical properties:
Densityp/(g/cm³) | Thermal conductivityλ/W·(m·K)- | Elastic modulusE/MPa | Linearexpansioncoefficient(20~100℃)a/10-6K-1 | ||
20℃ | 100℃ | 300℃ | |||
7.8 | 14 | 15 | 18 | 13.0 |
Steel varieties | σb/MPa | σp0.2/MPa | δ₅/% | hardness(HV) | Ak/J |
Wall thickness<20mmPipe | 800~1000 | ≥550 | ≥25 | 290 | |
Hot-rolled plates | 930 | 530 | 20 | ≥60 |
00Cr25Ni7Mo4NMechanical properties:
00Cr25Ni7Mo4NAlloy properties:
After suitable solution treatment, the microstructure of this steel has an ideal duplex structure with a α/γ ratio of about 50/50. When the solution temperature is above 1050°C, the number of ferrite phases in the steel will increase with the increase of temperature, but due to the high nitrogen content, the phase ratio of steel below 1300°C will not change significantly
00Cr25Ni7Mo4NUses of alloys:
It is mainly used in oil and gas pipelines, tanks and tanks of offshore chemical carriers, towers, tanks, containers and heat exchangers in the chemical industry, petrochemical industry, oil refining industry and seawater environment, and can replace high-grade austenitic stainless steel and high-nickel corrosion-resistant alloys.
00Cr25Ni7Mo4N Process performance:
Welding process: HuaNickel 00Cr25Ni7Mo4N steel can be welded by GTAW, GMAW, SMAW and SAW as well as PAW (plasma welding).
Heat treatment: The suitable heat treatment temperature of HuaNickel 00Cr25Ni7Mo4N steel is 1050~1120 °C, and there must be enough cooling rate after heat preservation to prevent equal precipitation between metals.
Relevant standards:
ASTM A240/ASME SA-240、ASTM A276、ASTM A182/ASME SA-182、ASTM A312/ASMES A312