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Russian Metals
30KHGSN2А ( 30ХГСН2А ) ( 30ХГСНА )
| Grade : | 30KHGSN2А ( 30ХГСН2А ) ( 30ХГСНА ) |
| Classification : | Alloy structurall steel |
| Equivalent grades: | Go here |
Chemical composition in % for grade 30KHGSА ( 30ХГСА )
| C | Si | Mn | Ni | S | P | Cr | Cu |
|---|---|---|---|---|---|---|---|
| 0.28 - 0.34 | 0.9 - 1.2 | 0.8 - 1.1 | max 0.3 | max 0.025 | max 0.025 | 0.8 - 1.1 | max 0.3 |
Temperature of critical points for grade 30KHGSА ( 30ХГСА ).
| Ac1 = 760 , Ac3(Acm) = 830 , Ar3(Arcm) = 705 , Ar1 = 670 , Mn = 352 |
Mechanical properties under Т=20°С f°r grade 30KHGSА ( 30ХГСА )
| Assortment | Dimension | Direct. | σB | σT | δ5 | ψ | KCU | Heat treatment |
|---|---|---|---|---|---|---|---|---|
| - | (mm) | - | MPa | MPa | % | % | kJ/m² | - |
| Pipe, GOST 8731-87 | 686 | 11 | ||||||
| Pipe cooling strain, GOST 8733-74 | 491 | 18 | ||||||
| Bar, GOST 4543-71 | Ø 25 | 1080 | 830 | 10 | 45 | 490 | Guenching 880oC, oil, Drawing 540oC, water, | |
| Sheet trick, GOST 11269-76 | 490-740 | 20 | Normalizing | |||||
| Sheet trick, GOST 11269-76 | 1080 | 9 | 490 | Guenching and drawing | ||||
| Sheet thin, GOST 11268-76 | 490-740 | 20 | Normalizing | |||||
| Sheet thin, GOST 11268-76 | 1080 | 10 | Guenching and drawing |
| Brinell hardness for 30KHGSА ( 30ХГСА ) (annealing) , GOST 4543-71 | HB 10 -1 = 229 MPa |
| Brinell hardness for 30KHGSА ( 30ХГСА ) , Pipe GOST 8733-74 | HB 10 -1 = 229 MPa |
| Brinell hardness for 30KHGSА ( 30ХГСА ) , Bar GOST 10702-78 | HB 10 -1 = 217 MPa |
| Brinell hardness for 30KHGSА ( 30ХГСА ) (normalize) , Sheet trick GOST 11269-76 | HB 10 -1 = 156 - 217 MPa |
Technological properties for grade 30KHGSА ( 30ХГСА )
| Weldability : | limited weldability. |
| Flakes : | predisposed |
| Temper brittleness: | predisposed |
Physical properties for grade M3 ( М3 )
| T | E 10- 5 | α 10⁶ | λ | ρ | C | R 10⁹ |
|---|---|---|---|---|---|---|
| Grade | MPa | 1/Grade | Watt/(m·Grade) | kg/m3 | J/(kg·Grade) | Ohm·m |
| 20 | 2.15 | 38 | 7850 | 210 | ||
| 100 | 2.11 | 11.7 | 38 | 7830 | 496 | |
| 200 | 2.03 | 12.312.3 | 37 | 7800 | 504 | |
| 300 | 1.96 | 12.9 | 37 | 7760 | 512 | |
| 400 | 1.84 | 13.4 | 36 | 7730 | 533 | |
| 500 | 1.73 | 13.7 | 34 | 7700 | 554 | |
| 600 | 1.64 | 14 | 33 | 7670 | 584 | |
| 700 | 1.43 | 14.3 | 31 | 622 | ||
| 800 | 12.9 | 12.9 | 30 | 693 | ||
| T | E 10- 5 | α 10⁶ | λ | ρ | C | R 10⁹ |
Equivalent steels for grade M3 ( М3 )
Warning! Indicated both exact and nearest equivalents.
| Bulgaria | Poland | Czechia |
|---|---|---|
| BDS | PN | CSN |
| 30ChGSA | 30HGS 30HGSA | 14331 |
Types of delivery of grade 30KHGSА ( 30ХГСА )
- B03 - Metal forming treatment. Forgings
- 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
- В62 - Steel pipes and connecting parts to them
- В71 - Low-carbon steel wire
Specification
Mechanical properties :
σB - Tensile strength [MPa]
σT - Yield stress [MPa]
δ5 - Specific elongation at fracture [%]
ψ - Reduction of area [%]
KCU - Impact strength [kJ/m²]
HB - Brinell hardness [MPa]
Physical properties :
T - Test temperature [Grade]
E - Young modulus [MPa]
α - Coefficient of linear expansion (20° - T) [1/Grade]
λ - Thermal (heat) condition coefficient [Watt/(m·Grade)]
ρ - Density [kg/m³]
C - Specific heat (range 20° - 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
30KHGSА ( 30ХГСА ) - Alloy structurall 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