Steel 35
Description
Steel 35
Steel 35: 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 Steel 35 grade.
General steel 35
| Substitute brand |
| steel: steel 30, steel 40, 35G |
| Delivery type |
| Steel sheet 35, Sections, including shaped: GOST 1050−74, GOST 2591−71, GOST 2590−71, GOST 2879−69, GOST 8509−86, GOST 8510−86, GOST 8239−72, GOST 8240- 72, GOST 10702−78. Calibrated bar GOST 10702−78, GOST 7417−75, GOST 8559−75, GOST 8560−78. Polished bar and silver bar GOST 10702−78, GOST 14955−77. Thick sheet GOST 1577−81, GOST 19903−74, GOST 4041−71. Thin sheet GOST 16523−70. Tape GOST 2284−79. Strip GOST 1577−81, GOST 103−76, GOST 82−70. Wire GOST 5663−79, GOST 17305−71. Forgings and forged billets GOST 1133−71, GOST 8479−70. Pipes GOST 8734−75, GOST 8731−87, GOST 8732−78, GOST 8733−87. |
| Application |
| Parts of low strength, experiencing small stresses: axles, cylinders, crankshafts, connecting rods, spindles, sprockets, rods, rims, traverses, shafts, tires, discs and other parts. |
Chemical composition of steel 35
| Chemical element |
% |
| Silicon (Si) |
0.17−0.37 |
| Manganese (Mn) |
0.50−0.80 |
| Copper (Cu), no more |
0.25 |
| Arsenic (As), no more |
0.08 |
| Nickel (Ni), no more |
0.25 |
| Sulfur (S), no more |
0.04 |
| Carbon (C) |
0.32−0.40 |
| Phosphorus (P), no more |
0.035 |
| Chromium (Cr), no more |
0.25 |
Mechanical properties of 35 steel
Mechanical properties at elevated temperatures
| test t, ° C |
σ 0.2, MPa |
σ B, MPa |
δ 5 ,% |
ψ,% |
KCU, J / m 2 |
| Hot rolled condition |
| 200 |
300 |
580 |
nine |
39 |
78 |
| 300 |
205 |
580 |
21 |
52 |
69 |
| 400 |
185 |
500 |
23 |
64 |
59 |
| 500 |
145 |
350 |
24 |
70 |
39 |
| 600 |
78 |
195 |
35 |
83 |
69 |
| Sample 6 mm in diameter, 30 mm long, rolled. Deformation rate 16 mm / min. Strain rate 0.009 1 / s. |
| 700 |
100 |
150 |
34 |
75 |
|
| 800 |
69 |
110 |
56 |
100 |
|
| 900 |
55 |
74 |
54 |
100 |
|
| 1000 |
thirty |
51 |
69 |
100 |
|
| 1100 |
21 |
39 |
74 |
100 |
|
| 1200 |
fifteen |
27 |
85 |
100 |
|
| 1300 |
eighteen |
23 |
58 |
100 |
|
Mechanical properties of rolled products
| Heat treatment, delivery condition |
Section, mm |
σ B, MPa |
δ 5 ,% |
δ 4 ,% |
ψ,% |
HB |
| Hot-rolled steel, forged, calibrated and silver grade 2 after normalization |
25 |
25 |
20 |
|
45 |
|
| Calibrated steel grade 5 after work-hardening |
|
|
6 |
|
35 |
|
| Calibrated steel grade 5 after annealing or high tempering |
|
|
fifteen |
|
45 |
|
| Calibrated and calibrated steel with special finishing after spheroidizing annealing |
|
<540 |
|
|
45 |
187 |
| Steel calibrated and calibrated with a special finish, work-hardened without heat treatment |
|
590 |
five |
|
40 |
207 |
| Annealed or highly tempered sheets |
80 |
480 |
22 |
|
|
|
| Normalized or hot rolled strips |
6−25 |
530 |
20 |
|
45 |
|
| Hot rolled sheet |
<2 |
490−640 |
|
17 |
|
|
| Cold rolled sheet |
2−3.9 |
490−640 |
|
19 |
|
|
| Heat-treated sheet of the 1st-2nd category |
4−14 |
480−630 |
22 |
|
|
163 |
| Cold rolled annealed strip |
0.1−4 |
400−650 |
|
sixteen |
|
|
| Cold-rolled cold-worked strip, strength class H2 |
0.1−4 |
800−950 |
|
|
|
|
| Pipes hot-, cold- and heat-deformed, heat-treated |
|
510 |
17 |
|
|
187 |
Mechanical properties of forgings
| Heat treatment, delivery condition |
Section, mm |
σ 0.2, MPa |
σ B, MPa |
δ 5 ,% |
ψ,% |
KCU, J / m 2 |
HB |
| Normalization |
| KP 195 |
300−500 |
195 |
390 |
20 |
45 |
49 |
111−156 |
| KP 195 |
500−800 |
195 |
390 |
eighteen |
38 |
44 |
111−156 |
| KP 215 |
100−300 |
215 |
430 |
20 |
48 |
49 |
123−167 |
| KP 215 |
300−500 |
215 |
430 |
eighteen |
40 |
44 |
123−167 |
| KP 215 |
500−800 |
215 |
430 |
sixteen |
35 |
39 |
123−167 |
| KP 245 |
<100 |
245 |
470 |
22 |
48 |
49 |
143−179 |
| KP 245 |
100−300 |
245 |
470 |
19 |
42 |
39 |
143−179 |
| KP 245 |
300−500 |
245 |
470 |
17 |
35 |
39 |
143−179 |
| Hardening. Vacation. |
| KP 275 |
<100 |
275 |
530 |
20 |
40 |
44 |
156−197 |
| KP 275 |
100−300 |
275 |
530 |
17 |
38 |
34 |
156−197 |
| KP 315 |
<100 |
315 |
570 |
17 |
38 |
39 |
167−207 |
Mechanical properties depending on the tempering temperature
| vacation t, ° С |
σ 0.2, MPa |
σ B, MPa |
δ 5 ,% |
ψ,% |
KCU, J / m 2 |
HB |
| Billet with a diameter of 60 mm, quenching at 850 ° C in water |
| 200 |
600 |
760 |
thirteen |
60 |
29 |
226 |
| 300 |
560 |
735 |
fourteen |
63 |
29 |
212 |
| 400 |
520 |
690 |
fifteen |
64 |
98 |
200 |
| 500 |
470 |
660 |
17 |
67 |
137 |
189 |
| 600 |
410 |
620 |
eighteen |
71 |
176 |
175 |
| 700 |
340 |
580 |
19 |
73 |
186 |
162 |
Technological properties of steel 35
| Forging temperature |
| Beginning 1280, end 750. Billets with a cross section up to 800 mm are cooled in air. |
| Weldability |
| Limited weldability. Methods of welding RDS, ADS submerged arc and gas shielded, EShS. Heating and subsequent heat treatment is recommended. KTS without restrictions. |
| Machinability by cutting |
| In the hot-rolled state at HB 144−156 and σ B = 510 MPa, K υ b.st. = 1.3. |
| Tendency to release ability |
| Not inclined. |
| Flock sensitivity |
| Not sensitive. |
Temperature of critical points of steel 35
| Critical point |
° C |
| Ac1 |
730 |
| Ac3 |
810 |
| Ar3 |
796 |
| Ar1 |
680 |
| Mn |
360 |
Impact strength of steel 35
Impact strength, KCU, J / cm 2
| Delivery status, heat treatment |
+20 |
-20 |
-thirty |
-50 |
-60 |
| Normalization |
63 |
47 |
45 |
fourteen |
12 |
Endurance limit steel 35
| σ -1, MPa |
τ -1, MPa |
σ B, MPa |
Heat treatment, steel condition |
| 265 |
|
570 |
Normalization 850 C. |
| 245 |
147 |
|
Normalization 850−890 C. Vacation 650−680 C. |
| 402 |
|
710 |
Hardening 850 C. Ottpusk 650 C. |
Physical properties of steel 35
| Test temperature, ° С |
20 |
100 |
200 |
300 |
400 |
500 |
600 |
700 |
800 |
900 |
| Normal elastic modulus, E, GPa |
206 |
197 |
187 |
156 |
168 |
|
|
|
|
|
| Density of steel, pn, kg / m 3 |
7826 |
7804 |
7771 |
7738 |
7700 |
7662 |
7623 |
7583 |
7600 |
7549 |
| Thermal conductivity coefficient W / (m ° С) |
|
49 |
49 |
47 |
44 |
41 |
38 |
35 |
29 |
28 |
| Ud. electrical resistance (p, Nom. m) |
|
251 |
321 |
408 |
511 |
629 |
759 |
922 |
1112 |
1156 |
| 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) |
12.0 |
12.9 |
13.6 |
14.2 |
14.6 |
15.0 |
15.2 |
12.7 |
13.9 |
|
| Specific heat (C, J / (kg ° C)) |
469 |
490 |
511 |
532 |
553 |
578 |
611 |
708 |
699 |
|