| Grade : | 45GL ( 45ГЛ ) |
| Substitute: | 40ХЛ |
| Classification : | Casting alloy steel for general purposes |
| Equivalent grades: | Is absent |
Chemical composition in % for grade 45GL ( 45ГЛ )
| C | Si | Mn | S | P |
| 0.4 - 0.5 | 0.2 - 0.5 | 0.8 - 1.2 | max 0.04 | max 0.04 |
Temperature of critical points for grade 45GL ( 45ГЛ ).
| Ac1 = 724 , Ac3(Acm) = 775 , Ar1 = 675 |
Mechanical properties under Т=20oС for grade 45GL ( 45ГЛ )
| Assortment | Dimension | Direct. | sв | sT | d5 | y | KCU | Heat treatment |
| - | mm | - | MPa | MPa | % | % | kJ / m2 | - |
| Casting, GOST 977-88 | to 100 | 628 | 334 | 13 | 20 | 285 | Guenching 860 - 880oC, water, Drawing 580 - 630oC, water, | |
| Casting, GOST 977-88 | 579 | 334 | 14 | 25 | 285 | Normalizing |
Technological properties for grade 45GL ( 45ГЛ )
| Weldability: | limited weldability. |
| Flakes : | not predisposed |
| Temper brittleness: | not predisposed |
Technological properties of the material 45GL ( 45ГЛ ) .
| Linear shrinkage : | 2.2 % |
Heat treatment of the material 45GL ( 45ГЛ )
| Normalizing 870 - 890 ° C, Tempering 570 - 600 ° C |
| Hardening 840 - 860 ° C, Tempering 600 - 650 ° C |
Types of delivery of grade 45GL ( 45ГЛ )
| B82 - Steel Castings |
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 |
45GL ( 45ГЛ ) - Casting alloy steel for general purposes: 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. |