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Russian Metals
AD35
Characteristics for grade 30KHGSА ( 30ХГСА )
| Grade : | 30KHGSА (30ХГСА) |
| Substitute: | 40ХФА, 35ХМ, 40ХН, 25ХГСА, 35ХГСА |
| Classification : | Alloy structural 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 T=20°C for grade 30KHGSА (30ХГСА)
| Assortment | Dimension (mm) | Direct. | σB (MPa) | σT (MPa) | δ5 (%) | ψ (%) | KCU (kJ/m²) | Heat treatment |
|---|---|---|---|---|---|---|---|---|
| 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 | Quenching 880°C, oil, Drawing 540°C, water |
| Sheet trick, GOST 11269-76 | - | - | 490-740 | 20 | - | - | 490 | Normalizing |
Brinell Hardness for 30KHGSА (30ХГСА)
| Annealing, GOST 4543-71 | HB 10 -1 = 229 MPa |
| Pipe GOST 8733-74 | HB 10 -1 = 229 MPa |
| Bar GOST 10702-78 | HB 10 -1 = 217 MPa |
| Normalizing, 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 30KHGSА (30ХГСА)
| T | E (10⁵ MPa) | α (10⁶ 1/Grade) | λ (Watt/(m·Grade)) | ρ (kg/m³) | C (J/(kg·Grade)) | R (10⁹ Ohm·m) |
|---|---|---|---|---|---|---|
| 20 | 2.15 | - | 38 | 7850 | - | 210 |
| 100 | 2.11 | 11.7 | 38 | 7830 | 496 | - |
| 200 | 2.03 | 12.3 | 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 | 1.25 | 12.9 | 30 | - | 693 | - |
Equivalent steels for grade 30KHGSА (30ХГСА)
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
B05 - Welding and cutting of metals, Soldering, riveting
B22 - Graded and shaped rolling
B23 - Sheets and Strips
B32 - Graded and shaped rolling
B33 - Sheets and Strips
B62 - Steel pipes and connecting parts to them
B71 - 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 treating
Limited weldability - Welding is possible under heating up to 100-120°C and subsequent heat treating
Hard weldability - Quality welding needs additional operations: heating up to 200-300°C, with heat treating in annealing
30KHGSА (30ХГСА) - Alloy structural steel: chemical composition, mechanical and physical properties, hardness.
Database of steels and alloys (Marochnik) contains information about chemical composition and properties of more than 3000 steels and alloys.