| Grade : | 65G ( 65Г ) |
| Substitute: | 70, У8А, 70Г, 60С2А, 9ХС, 50ХФА, 60С2, 55С2 |
| Classification : | Spring structural steel |
| Equivalent grades: | Go here |
Chemical composition in % for grade 65G ( 65Г )
| C | Si | Mn | Ni | S | P | Cr | Cu |
| 0.62 - 0.7 | 0.17 - 0.37 | 0.9 - 1.2 | max 0.25 | max 0.035 | max 0.035 | max 0.25 | max 0.2 |
Temperature of critical points for grade 65G ( 65Г ).
| Ac1 = 721 , Ac3(Acm) = 745 , Ar3(Arcm) = 720 , Ar1 = 670 , Mn = 270 |
Mechanical properties under Т=20oС for grade 65G ( 65Г )
| Assortment | Dimension | Direct. | sв | sT | d5 | y | KCU | Heat treatment |
| - | mm | - | MPa | MPa | % | % | kJ / m2 | - |
| Rolled stock, GOST 14959-79 | 980 | 785 | 8 | 30 | Guenching and drawing | |||
| Sheet trick, GOST 1577-93 | 740 | 12 | ||||||
| Band cold-worked , GOST 2283-79 | 740-1180 | |||||||
| Band annealed , GOST 2283-79 | 640-740 | 10-15 |
| Brinell hardness for 65G ( 65Г ) (without heat treatment) , GOST 14959 | HB 10 -1 = 285 MPa |
| Brinell hardness for 65G ( 65Г ) (heat treatment) , Rolled stock GOST 14959-79 | HB 10 -1 = 241 MPa |
| Brinell hardness for 65G ( 65Г ) (annealing) , Sheet trick GOST 1577-93 | HB 10 -1 = 229 MPa |
Technological properties for grade 65G ( 65Г )
| Weldability: | is not used. |
| Flakes : | weakly predisposed |
| Temper brittleness: | predisposed |
Physical properties for grade 65G ( 65Г )
| 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 | 2.15 | 37 | 7850 | |||
| 100 | 2.13 | 11.8 | 36 | 7830 | 490 | |
| 200 | 2.07 | 12.6 | 35 | 7800 | 510 | |
| 300 | 2 | 13.2 | 34 | 525 | ||
| 400 | 1.8 | 13.6 | 32 | 7730 | 560 | |
| 500 | 1.7 | 14.1 | 31 | 575 | ||
| 600 | 1.54 | 14.6 | 30 | 590 | ||
| 700 | 1.36 | 14.5 | 29 | 625 | ||
| 800 | 1.28 | 11.8 | 28 | 705 | ||
| T | E 10- 5 | a 10 6 | l | r | C | R 10 9 |
Equivalent steels for grade 65G ( 65Г )
| USA | Germany | England | China | Bulgaria | Poland | |||||||||
| - | DIN,WNr | BS | GB | BDS | PN | |||||||||
|
|
|
|
|
|
Types of delivery of grade 65G ( 65Г )
| В05 - Welding and cutting of metals., Soldering, riveting |
| В22 - Graded and shaped rolling |
| B23 - Sheets and Strips |
| В32 - Graded and shaped rolling |
| B33 - Sheets and Strips |
| B34 - Ribbons |
| В71 - Low-carbon steel wire |
| В72 - Medium-high and high-carbon steel wire |
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] |
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 |
65G ( 65Г ) - Spring structural steel: chemical composition, mechanical and physical properties, hardness
Database of steels and alloys (Marochnik) contains information about chemical composition and properties more then 3000 steels and alloys
| © 2003 - 2024 Database of Steel and Alloy (russian title is the Marochnik)
Administration of the Marochnik is not responsible for the content's use. |