Steel 16GS
Description
Steel 16GS
Steel 16GS: 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 16GS.
General information about steel 16GS
| Substitute brand |
| steel: steel 17gs, 15GS, 20G2S, 20GS, 18G2S. |
| Delivery type |
| thick sheet: GOST 19282−73, GOST 5520−79, GOST 19903−74. Thin sheet GOST 17066−80, GOST 19903−74, GOST 19904−74. Strip GOST 82−70 |
| Application |
| flanges, housings and other parts operating at temperatures from -40 to 475 ° C under pressure; elements of welded metal structures operating at a temperature of -70 ° C. |
Chemical composition of steel 16GS
| Chemical element |
% |
| Nitrogen (N), no more |
0.008 |
| Silicon (Si) |
0.44−0.7 |
| Manganese (Mn) |
0.9−1.2 |
| 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) |
0.12−0.18 |
| Phosphorus (P), no more |
0.035 |
| Chromium (Cr), no more |
0.30 |
Mechanical properties of steel 16GS
| Heat treatment, delivery condition |
Section, mm |
σ 0.2, MPa |
σ B, MPa |
δ 5 ,% |
| Sheets and strips (cross samples) |
<5 |
325 |
490 |
21 |
| Sheets and strips (cross samples) |
5−10 |
325 |
490 |
21 |
| Sheets and strips (cross samples) |
10−20 |
315 |
480 |
21 |
| Sheets and strips (cross samples) |
20−32 |
295 |
470 |
21 |
| Sheets and strips (cross samples) |
32−60 |
285 |
460 |
21 |
| Sheets and strips (cross samples) |
60−100 |
275 |
450 |
21 |
| Hot rolled sheets |
2−3.9 |
|
400 |
17 |
Mechanical properties at elevated temperatures
| test t, ° C |
σ 0.2, MPa |
σ B, MPa |
δ 5 ,% |
ψ,% |
KCU, J / m 2 |
| Rolled sheets 26 mm thick (transverse samples) |
| 20 |
|
490 |
27 |
51 |
|
| 200 |
230 |
420 |
|
52 |
|
| 300 |
225 |
450 |
29 |
48 |
|
| 400 |
215 |
410 |
|
64 |
|
| 500 |
175 |
305 |
31 |
68 |
|
| 550 |
135 |
255 |
37 |
68 |
|
| Sheets 4−160 mm thick. Normalization 950 ° C, cooling at a speed of 80−100 deg / h. Vacation 600−750 ° С, exposure 5 h, cooling at a rate of 50 deg / h (transverse samples) |
| 20 |
245−295 |
470−500 |
27−38 |
51−72 |
59−196 |
| 200 |
175−255 |
420−450 |
24−31 |
52−74 |
206−343 |
| 250 |
|
|
|
|
245−304 |
| 300 |
195−225 |
390−480 |
22−29 |
48−70 |
225−314 |
| 350 |
175−225 |
450−480 |
25−31 |
66−71 |
206−314 |
| 400 |
175−215 |
400−430 |
27−34 |
64−76 |
127−235 |
| 500 |
145−195 |
255−345 |
31−38 |
68−85 |
118−157 |
| 550 |
135 |
255 |
37 |
68 |
|
| 600 |
110−125 |
155−175 |
38−46 |
82−90 |
118−157 |
Technological properties of steel 16GS
| Forging temperature |
| The beginning is 1200, the end is 850. |
| Weldability |
| weldable without restrictions. Welding methods: RDS, ADS submerged arc and gas shielded. |
| Tendency to release ability |
| not inclined |
| Flock sensitivity |
| not sensitive |
Temperature of critical points of steel 16GS
| Critical point |
° C |
| Ac1 |
736−745 |
| Ac3 |
920−927 |
| Ar3 |
791−820 |
| Ar1 |
641−735 |
Impact strength of steel 16GS
Impact strength, KCU, J / cm 2
| Delivery status, heat treatment |
+20 |
-40 |
-70 |
| Sheets and strips (cross samples) with a cross section of 5−10 mm |
59 |
39 |
29 |
| Sheets and strips (cross samples) with a section of 10−100 mm |
59 |
29 |
24 |
Corrosion properties of steel 16GS
| Wednesday |
Test temperature, ° С |
Corrosion rate, mm / year |
| NaOH solution |
20 |
0.460 |
| 25% NH4OH solution |
20 |
0.260 |
Physical properties of steel 16GS
| Test temperature, ° С |
20 |
100 |
200 |
300 |
400 |
500 |
600 |
700 |
800 |
900 |
| Normal elastic modulus, E, GPa |
|
|
|
181 |
172 |
162 |
|
|
|
|
| Density of steel, pn, kg / m 3 |
7850 |
|
|
|
|
|
|
|
|
|
| Test temperature, ° С |
20−100 |
20−200 |
20−300 |
20−400 |
20−500 |
20−600 |
20−700 |
20−800 |
20−900 |
20−1000 |
| Linear expansion coefficient (a, 10−6 1 / ° С) |
11.1 |
12.1 |
12.9 |
13.5 |
13.9 |
14.1 |
|
|
|
|
| Specific heat (C, J / (kg ° C)) |
470 |
|
|
|
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