Steel 35GS
Description
Steel 35GS
Steel 35GS: a brand of steels and alloys. Below is a systematized information on the purpose, chemical composition, types of supplies, substitutes, temperature of critical points, physical, mechanical, technological and casting properties for the grade — Steel 35GS.
General information about steel 35GS
| Substitute brand |
| steel: VSt5sp, St6, St5ps. |
| Delivery type |
| Rebar 35gs, long products, including shaped: GOST 5781−82, GOST 2590−71. |
| Application |
| for the manufacture of fittings of periodic profile of class A-III with a diameter of 6 to 40 mm. |
The chemical composition of steel 35GS
| Chemical element |
% |
| Silicon (Si) |
0.60−0.90 |
| Manganese (Mn) |
0.80−1.20 |
| Copper (Cu), no more |
0.30 |
| Nickel (Ni), no more |
0.30 |
| Sulfur (S), no more |
0.045 |
| Carbon (C) |
0.30−0.37 |
| Phosphorus (P), no more |
0.040 |
| Chromium (Cr), no more |
0.30 |
Mechanical properties of 35GS steel
Mechanical properties
| Heat treatment, delivery condition |
Section, mm |
σ 0.2, MPa |
σ B, MPa |
δ 5 ,% |
KCU, J / m 2 |
HB |
| Reinforcing steel of the III class hot-rolled |
6−40 |
390 |
590 |
fourteen |
|
|
| Sample 340−360 mm long of profile No. 14 of bar reinforcement, hot-rolled |
|
410−450 |
690−710 |
15−21 |
48−64 |
202 |
| Sample 340−360 mm long of profile No. 14 of bar reinforcement after quenching at 1000 ° C, water (35 ° C), 4 s, tempering at 425 ° C. |
|
890−900 |
1000−1050 |
9−10 |
127−157 |
363 |
Mechanical properties depending on the tempering temperature
| vacation t, ° С |
σ 0.2, MPa |
σ B, MPa |
δ 5 ,% |
| Rod fittings. Hardening 870−880 ° C. |
| 300 |
1220 |
1370 |
five |
| 400 |
1030 |
1130 |
ten |
| 500 |
730 |
850 |
sixteen |
| 600 |
640 |
730 |
eighteen |
Mechanical properties depending on the section
| Section, mm |
σ 0.2, MPa |
σ B, MPa |
δ 5 ,% |
| Hot rolled rod |
| sixteen |
350−375 |
590−630 |
22−30 |
| 25 |
370−500 |
610−770 |
18−30 |
| 40 |
405−420 |
660−690 |
20−23 |
| Cold-formed rod |
| sixteen |
550−630 |
660−700 |
11−19 |
Mechanical properties depending on the degree of deformation
| Heat treatment, delivery condition |
σ B, MPa |
δ 5 ,% |
ψ,% |
HB |
| Sample 50 mm long, 10 mm cross-section, profile No. 22, bar reinforcement. Heating 930 ° С, cooling in air to 800 ° С, cooling after deformation by stretching in nitrate at 300 ° С for 5 min. |
| |
950 |
five |
69 |
210 |
| Deformation rate 10% |
950 |
sixteen |
|
245 |
| Deformation rate 15% |
950 |
|
69 |
260 |
| Deformation rate 35% |
950 |
sixteen |
73 |
260 |
Technological properties of 35GS steel
| Weldability |
| weldable without restrictions. |
Temperature of critical points of steel 35GS
| Critical point |
° C |
| Ac1 |
750 |
| Ac3 |
820 |
| Mn |
369 |
Impact strength of steel 35GS
Impact strength, KCU, J / cm 2
| Delivery status, heat treatment |
-20 |
-40 |
| Sample 340−360 mm long of profile No. 14 of bar reinforcement, hot-rolled |
38−47 |
24−31 |
| Sample 340−360 mm long of profile No. 14 of bar reinforcement, after quenching 1000 C, tempering 425 C. |
99−142 |
49−70 |
