Steel 14G2AF
Description
Steel 14G2AF
Steel 14G2AF: 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 14G2AF.
General information about steel 14G2AF
| Substitute brand |
| steel 16G2AF |
| Delivery type |
| sheet 14g2af thick GOST 19282−73, GOST 19903−74. Strip GOST 82−70. |
| Application |
| metal structures for industrial buildings, crane girders for bridge cranes. |
Chemical composition of 14G2AF steel
| Chemical element |
% |
| Nitrogen (N) |
0.015−0.025 |
| Vanadium (V) |
0.07−0.12 |
| Silicon (Si) |
0.3−0.6 |
| Manganese (Mn) |
1.2−1.6 |
| Copper (Cu), no more |
0.30 |
| Arsenic (As), no more |
0.08 |
| Nickel (Ni), no more |
0.30 |
| Sulfur (S), no more |
0.04 |
| Carbon (C) |
0.12−0.18 |
| Phosphorus (P), no more |
0.035 |
| Chromium (Cr), no more |
0.40 |
Mechanical properties of 14G2AF steel
| Heat treatment, delivery condition |
Section, mm |
σ 0.2, MPa |
σ B, MPa |
δ 5 ,% |
| Sheets and strips (cross samples) |
<50 |
390 |
540 |
20 |
Mechanical properties at elevated temperatures
| test t, ° C |
σ 0.2, MPa |
σ B, MPa |
δ 5 ,% |
ψ,% |
| Sheets 20 mm thick. Normalization |
| 20 |
480 |
590 |
35 |
73 |
| 100 |
430 |
590 |
29 |
73 |
| 200 |
390 |
550 |
27 |
69 |
| 300 |
350 |
580 |
27 |
64 |
| 400 |
320 |
550 |
thirty |
76 |
| 500 |
270 |
405 |
29 |
82 |
| 600 |
190 |
265 |
36 |
89 |
| 700 |
100 |
120 |
42 |
88 |
| 800 |
78 |
98 |
41 |
80 |
| 900 |
59 |
93 |
58 |
96 |
Mechanical properties depending on sheet thickness
| Heat treatment, delivery condition |
σ 0.2, MPa |
σ B, MPa |
δ 5 ,% |
| Normalization |
| Sheet thickness 14 mm |
470−485 |
620−630 |
24 |
| Sheet thickness 25 mm |
470−490 |
610−640 |
24−26 |
| Sheet thickness 32 mm |
455−465 |
590 |
25 |
| Sheet thickness 40 mm |
420−440 |
550−580 |
23−25 |
Technological properties of 14G2AF steel
| Weldability |
| weldable without restrictions. |
Impact strength of 14G2AF steel
Impact strength, KCU, J / cm 2
| Delivery status, heat treatment |
-40 |
-70 |
| Sheets and strips 5−10 mm thick |
44 |
34 |
| Sheets and strips (Cross samples) 10−50 mm thick |
39 |
29 |
Physical properties of steel 14G2AF
| Test temperature, ° С |
20 |
100 |
200 |
300 |
400 |
500 |
600 |
700 |
800 |
900 |
| Normal elastic modulus, E, GPa |
|
196 |
200 |
194 |
186 |
177 |
167 |
148 |
124 |
106 |
| Thermal conductivity coefficient W / (m ° С) |
|
46 |
44 |
42 |
40 |
36 |
33 |
29 |
|
|
