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Grade : | OT4-0 ( ОТ4-0 ) |
Classification : | Titanium wrought alloy |
Equivalent grades: | Is absent |
Fe | C | Si | Mn | N | Ti | Al | Zr | O | H | Impurity |
max 0.3 | max 0.1 | max 0.12 | 0.5 - 1.3 | max 0.05 | 96.13 - 98.8 | 0.4 - 1.4 | max 0.3 | max 0.15 | max 0.012 | other 0.3 |
Assortment | Dimension | Direct. | sв | sT | d5 | y | KCU | Heat treatment |
- | mm | - | MPa | MPa | % | % | kJ / m2 | - |
Sheet annealed , GOST 22178-76 | 470 | 20-30 | ||||||
Pipe, GOST 24890-81 | 490-637 | 15 | ||||||
Bar, GOST 26492-85 | 440 | 13-15 | 30-35 | 400-500 | Annealing | |||
Bar, GOST 26492-85 | 440-635 | 20 | 32-40 | 500-700 | Annealing | |||
Plate , GOST 23755-79 | 11 - 150 | 490-635 | 10-12 | 18 |
Brinell hardness for OT4-0 ( ОТ4-0 ) , Sheet | HB 10 -1 = 200 MPa |
Brinell hardness for OT4-0 ( ОТ4-0 ) , Bar | HB 10 -1 = 156 - 207 MPa |
Weldability: | without limitations. |
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 | 1.15 | 4514 |
B53 - Sheets and Strips |
B55 - Bars |
B64 - Pipes of non-ferrous metals and alloys |
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] |
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] |
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 |
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