Steel 17GS
Description
Steel 17GS
Steel 17GS: brand of steels and alloys. Below is the 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 17GS.
General information about steel 17GS
| Substitute brand |
| steel 16GS |
| Delivery type |
| Sheet 17gs, long products, including shaped: GOST 11474−76. Thick sheet GOST 19282−73, GOST 19903−74. Thin sheet GOST 17066−80, GOST 19903−74, GOST 19904−74. Strip GOST 82−70, GOST 103−76. |
| Application |
| apparatus bodies, bottoms, flanges and other welded parts operating under pressure at temperatures from -40 to + 475 ° C. |
Chemical composition of steel 17GS
| Chemical element |
% |
| Nitrogen (N), no more |
0.008 |
| Silicon (Si) |
0.4−0.6 |
| Manganese (Mn) |
1.0−1.4 |
| Copper (Cu), no more |
0.30 |
| Arsenic (As), no more |
0.08 |
| Nickel (Ni), no more |
0.30 |
| Sulfur (S), no more |
0.040 |
| Carbon (C) |
0.14−0.20 |
| Phosphorus (P), no more |
0.035 |
| Chromium (Cr), no more |
0.30 |
Mechanical properties of 17GS steel
| Heat treatment, delivery condition |
Section, mm |
σ 0.2, MPa |
σ B, MPa |
δ 5 ,% |
| Sheets and strips (cross samples) |
<10 |
345 |
510 |
23 |
| Sheets and strips (cross samples) |
10−20 |
335 |
490 |
23 |
| Hot rolled sheets |
2−3.9 |
|
510 |
19 |
| Sheets 2−6, 10−12, 16.18 categories heat-treated (transverse samples) |
4−20 |
320 |
490−610 |
22 |
Technological properties of steel 17GS
| Weldability |
| weldable without restrictions. |
Temperature of critical points of steel 17GS
| Critical point |
° C |
| Ac1 |
745 |
| Ac3 |
870 |
| Ar3 |
790 |
| Ar1 |
680 |
| Mn |
380 |
Impact strength of steel 17GS
Impact strength, KCU, J / cm 2
| Delivery status, heat treatment |
KCU |
| Sheets and strips (cross samples) with a cross section of 5−10 mm |
44 |
| Sheets and strips (cross samples) with a section of 10−20 mm |
34 |
Yield strength of steel 17GS
| Test temperature, ° C / s 0.2 |
| 200 |
250 |
300 |
350 |
400 |
450 |
| 265 |
245 |
225 |
205 |
175 |
175 |
