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Grade : | U12 ( У12 ) |
Substitute: | У10, У11 |
Classification : | Carbon tool steel |
Equivalent grades: | Go here |
C | Si | Mn | Ni | S | P | Cr | Cu |
1.1 - 1.29 | 0.17 - 0.33 | 0.17 - 0.33 | max 0.25 | max 0.028 | max 0.03 | max 0.2 | max 0.25 |
Ac1 = 730 , Ac3(Acm) = 820 , Ar1 = 700 , Mn = 200 |
Assortment | Dimension | Direct. | sв | sT | d5 | y | KCU | Heat treatment |
- | mm | - | MPa | MPa | % | % | kJ / m2 | - |
Band annealed | 0.08 - 3 | 750 | 10 | |||||
Steel | 590-690 | 325 | 28 | 50 | 270 | Annealing |
Brinell hardness for U12 ( У12 ) (annealing) , GOST 1435-99 | HB 10 -1 = 217 MPa |
Weldability: | is not used. |
Flakes : | not 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 | 2.09 | 7830 | ||||
100 | 2.05 | 10.5 | 45 | 7809 | 469 | 252 |
200 | 2 | 11.8 | 43 | 7781 | 503 | 333 |
300 | 1.93 | 12.6 | 40 | 7749 | 519 | 430 |
400 | 1.85 | 13.4 | 37 | 7713 | 536 | 540 |
500 | 1.78 | 13.1 | 35 | 7675 | 553 | 665 |
600 | 1.66 | 14.8 | 32 | 7634 | 720 | 802 |
700 | 15.3 | 28 | 7592 | 611 | 964 | |
800 | 15 | 24 | 7565 | 712 | 1152 | |
900 | 16.3 | 25 | 7489 | 703 | 1196 | |
1000 | 16.8 | 699 | ||||
T | E 10- 5 | a 10 6 | l | r | C | R 10 9 |
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В22 - Graded and shaped rolling |
B23 - Sheets and Strips |
В32 - Graded and shaped rolling |
B33 - Sheets and Strips |
В72 - Medium-high and high-carbon steel wire |
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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