Steel 25G2S
Description
Steel 25G2S
Steel 25G2S: 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 25G2S.
General information about steel 25G2S
| Delivery type |
| Rebar a3 25g2s, long products, including shaped: GOST 5781−82, GOST 2590−71. |
| Application |
| for the manufacture of rebars of a periodic profile of class III with a diameter of 6 to 40 mm. |
Chemical composition of steel 25G2S
| Chemical element |
% |
| Silicon (Si) |
0.60−0.90 |
| Manganese (Mn) |
1.20−1.60 |
| Copper (Cu), no more |
0.30 |
| Nickel (Ni), no more |
0.30 |
| Sulfur (S), no more |
0.045 |
| Carbon (C) |
0.20−0.29 |
| Phosphorus (P), no more |
0.040 |
| Chromium (Cr), no more |
0.30 |
Mechanical properties of steel 25G2S
| Heat treatment, delivery condition |
Section, mm |
σ 0.2, MPa |
σ B, MPa |
δ 5 ,% |
| Reinforcing steel of the III class hot-rolled |
6−40 |
390 |
590 |
fourteen |
Mechanical properties depending on the tempering temperature
| vacation t, ° С |
σ 0.2, MPa |
σ B, MPa |
δ 5 ,% |
| Rod reinforcement with a section of 14−16 mm. Hardening 900 ° C, water. |
| 150 |
1220 |
1310 |
8 |
| 300 |
1100 |
1210 |
6 |
| 400 |
960 |
1060 |
nine |
| 500 |
830 |
910 |
fourteen |
| 600 |
690 |
740 |
17 |
Mechanical properties depending on the section
| Section, mm |
σ 0.2, MPa |
σ B, MPa |
δ 5 ,% |
| Hot rolled rod |
| sixteen |
420−430 |
660−690 |
23−28 |
| 25 |
380−400 |
590−620 |
23−31 |
| 40 |
420−435 |
660−680 |
25−29 |
| Cold-formed rod |
| sixteen |
580−660 |
640−730 |
15−18 |
Technological properties of steel 25G2S
| Forging temperature |
| The beginning is 1200, the end is 850. |
| Weldability |
| weldable without restrictions. |
| Tendency to release ability |
| not inclined |
| Flock sensitivity |
| not sensitive |
Impact strength of steel 25G2S
Impact strength, KCU, J / cm 2
| Delivery status, heat treatment |
+20 |
-20 |
-40 |
| Bar periodic profile with a diameter of 12 mm |
132 |
92 |
84 |
| Bar periodic profile with a diameter of 14 mm |
191 |
169 |
136 |
| Bar periodic profile with a diameter of 22 mm |
135 |
96 |
69 |
