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GOST9941-81 12X18H12T Seamless Boiler Tube, Russian Standard, High Nickel Content,TY-14-3P-55-2001
GOST 9941-81 12X18H12T seamless pipe is a titanium-stabilized austenitic stainless steel seamless pipe under the Russian standard. It is widely used in chemical, power, and other fields requiring high-temperature and corrosive environments due to its excellent corrosion resistance and high-temperature resistance. Although this standard has been superseded by GOST 9941-2022, it is still widely recognized and used in actual trade and engineering.
Material grade: 12X18H12T. This is an austenitic grade stainless steel. Its core characteristic is the addition of titanium (Ti) as a stabilizing element to prevent intergranular corrosion during welding or high-temperature service.
Its international equivalent is mainly AISI 321, but there are significant differences. 12X18H12T has a nickel content as high as 11%, resulting in a much higher price in addition to performance differences.
GOST 9941-81 12X18H12T Chemical Composition (Mass Fraction, %)
Element
Composition (% by weight)
Carbon (C)
≤ 0.12
Silicon (Si)
≤ 0.8
Manganese (Mn)
≤ 2.0
Chromium (Cr)
17.0 – 19.0
Nickel (Ni)
11.0 – 13.0
Titanium (Ti)
5×C% to 0.70
Sulfur (S)
≤ 0.020
Phosphorus (P)
≤ 0.035
Iron (Fe)
Balance
GOST 9941-81 12X18H12T Mechanical Properties
Property
Value
Tensile Strength (min.)
≥ 510 – 549 MPa
Yield Strength (0.2% offset, min.)
≥ 196 – 235 MPa
Elongation (min.)
≥ 35%
Heat Treatment
Solution Anneal
Applications:
Chemical and Petroleum Industry: Widely used in the manufacture of heat exchangers, condensers, and reaction equipment, capable of withstanding various corrosive chemicals.
Power and Energy Sector: Used in steam boilers, power plant cooling systems, and some equipment in nuclear power plants, capable of operating continuously in a temperature range of -196°C to +600°C.
Marine Engineering: Used in the manufacture of marine heat exchangers and pipes, resistant to seawater corrosion.
Other Industries: Includes equipment in food processing, and water treatment industries requiring hygiene and corrosion resistance.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter,Trading Company,Seller
Year Established:
1990
Total Annual:
50M-75M
Employee Number:
50~850
Ecer Certification：
Verified Supplier
Yuhong Holding Group equipments production base at Jiangsu Jiangyin City, Jinjiang City and Yancheng City. Total production area around 184000 square meters, main products : Heat Exchanger, Condenser, Pressure Vessel , Fired Heater, Economizer, Columns, Reactor.
... Yuhong Holding Group equipments production base at Jiangsu Jiangyin City, Jinjiang City and Yancheng City. Total production area around 184000 square meters, main products : Heat Exchanger, Condenser, Pressure Vessel , Fired Heater, Economizer, Columns, Reactor.
...
