- 12MKH Valve
- 12MKH Flange
- 12MKH pipe fitting
- 12MKH Angle Bar
- 12MKH pipe
12MKH
12MKH angle bars, 12MKH flanges, Pipe Fitting, Steel Pipe, Heat Exchanger and Reducer, Gasket, Tee, Pipe Fitting, Tube Plate, have all specifications. With many yeas production experience, strict control 12MKH chemical composition and 12MKH mechanical properties.
Production specification
Data center describes many of the common steel models, we can not determine the company's warehouse has all types of steel products inventory or raw materials.
Angle bar: 1mm to 1300mm
Steel Pipe: 1 - 1300mm, also can be customed.
Pipe fitting Size: 1/8 inch - 80 inch (DN6 - DN2000)
Flange Size: DN6 - DN2000
Lenth: Any lenth based on the customer's requirement.
Steel Pipe: 1 - 1300mm, also can be customed.
Pipe fitting Size: 1/8 inch - 80 inch (DN6 - DN2000)
Flange Size: DN6 - DN2000
Lenth: Any lenth based on the customer's requirement.
Characteristics for grade 12MKH ( 12МХ ).
| Grade : | 12MKH ( 12МХ ) |
| Classification : | Low alloy high-temperature steel |
Mn |
Ni |
S |
P |
Cr |
S |
Mo |
W |
V |
Ti |
Cu |
0.09 - 0.16 |
0.17 - 0.37 |
0.4 - 0.7 |
max 0.3 |
max 0.025 |
max 0.03 |
0.4 - 0.7 |
max 0.2 |
max 0.05 |
max 0.03 |
max 0.2 |
Temperature of critical points for grade 12MKH ( 12МХ ).
Ac1 = 723 , Ac3(Acm) = 885 , Ar3(Arcm) = 803 , Ar1 = 715
Mechanical properties under Т=20oС for grade 12MKH ( 12МХ )
| Assortment | Dimension | Direct. | sв | sT | d5 | y | KCU | Heat treatment |
| - | mm | - | MPa | MPa | % | % | kJ / m2 | - |
| Pipe hot strain, GOST 550-75 | 412 | 245 | 21 | 45 | 690 | |||
| Bar, GOST 20072-74 | Ø 90 | 410 | 235 | 21 | 45 | 590 | Normalizing 910 - 930oC, air, Drawing 670 - 690oC, |
| Brinell hardness for 12MKH ( 12МХ ) (quenching, tempering) , | HB 10 -1= 182 MPa |
| Brinell hardness for 12MKH ( 12МХ ) (hot-rolled, annealing) , GOST 20072-74 | HB 10 -1= 217 MPa |
| Brinell hardness for 12MKH ( 12МХ ) , Pipe GOST 550-75 | HB 10 -1= 156 MPa |
| Weldability: | without limitations. |
| Flakes : | predisposed |
| Temper brittleness: | not predisposed |
| T | E 10- 5 | a 10 6 | l | r | C | R 10 9 |
| Grade | MPa | 1/Grade | Watt/(m·Grade) | kg/m3 | J/(kg·Grade) | Ohm·m |
| 20 | 2.12 | 7850 | ||||
| 100 | 2.06 | 11.2 | 50 | 7830 | 473 | 240 |
| 200 | 2 | 12.5 | 50 | 7800 | 519 | 330 |
| 300 | 1.95 | 12.7 | 50 | 7760 | 565 | 410 |
| 400 | 1.89 | 12.9 | 49 | 7730 | 594 | 540 |
| 500 | 1.79 | 13.2 | 47 | 7690 | 653 | 640 |
| 600 | 1.7 | 13.5 | 46 | 7650 | 733 | 740 |
| 700 | 1.6 | 13.8 | 44 | 7610 | 888 | 900 |
| T | E 10- 5 | a 10 6 | l | r | C | R 10 9 |
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| - | DIN,WNr | JIS | AFNOR | BS | EN | SS | ||||||||||||
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Specification :
| Mechanical properties : | |
| sв | - Tensile strength , [MPa] |
| sT | - Yield stress, [MPa] |
| d5 | - Specific elongation at fracture , [ % ] |
| y | - Reduction of area , [ % ] |
| KCU | - Impact strength , [ kJ / m2] |
| HB | - Brinell hardness , [MPa] |
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Physical properties : |
|
| T | - Test temperature , [Grade] |
| E | - Young modulus , [MPa] |
| a | - Coefficient of linear expansion (range 20o - T ) , [1/Grade] |
| l | - Termal (heat) condition coefficient , [Watt/(m·Grade)] |
| r | - Density , [kg/m3] |
| C | - Specific heat ( range 20o - T ), [J/(kg·Grade)] |
| R | - Electrical resistance , [Ohm·m] |
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Weldability : |
|
| without limitations | - welding is done without heating and subsequent heat treeting |
| limited weldability | - welding is possible under heating up to 100-120 grade and subsequent heat treeting |
| hard weldability | - obtaining the quality welding needs the additional operations:heating up to 200-300 grade; the heat treeting ia annealing |
Database of steels and alloys (Marochnik) contains information about chemical composition and properties more then 2500 steels and alloys
(stainless steel, Alloy steel, carbone steel, structural steel, tool steel,
cast iron, aluminum alloy, titanium alloy, copper alloy, nickel alloy, magnesium alloy and others).
Helpfull for specialists in grade technology, structural engineer, mechanical engineer, metallurgy and metal trader
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