Steel 20 / 20A Carbon Steel Products
Request Steel 20 / 20A Pricing
Auremo LLC, 505 Ellicott St, Buffalo, NY 14203, handles Steel 20 / 20A inquiries for U.S. machining, pressure-component and fabrication projects. Call +1 716 910 04 21 or send the standard, form, condition, dimensions and quantity.
Available product forms
- round and shaped bar
- sheet, plate and strip
- pipe and tube by specification
- forgings, wire and cut blanks
Information to include in your request
Please provide the governing standard or grade, product form, dimensions and tolerances, quantity, delivery ZIP code and required documentation. Pricing and availability are confirmed individually for each inquiry.
Frequently asked questions
How is the price for Steel 20 / 20A low-carbon structural steel confirmed?
Prices are provided on request and depend on the exact grade or standard, dimensions, tolerances, quantity, documentation and freight requirements.
Can non-standard dimensions be requested?
Yes. Include a drawing or dimensional requirements. Availability and manufacturing or sourcing feasibility are confirmed with the quotation.
What is the typical delivery time in the United States?
Typical U.S. delivery is 2–3 weeks after order confirmation. The final lead time and delivery terms are stated in the quotation for the selected material, quantity and destination.
Related materials and references
Steel 15 material record · Steel 40 material record · Steel 45 products
Description
Steel 20 / 20A product forms and purchasing requirements
The technical tables below describe chemistry, heat treatment and mechanical and physical properties. A quotation should identify the issuing standard, required sheet, plate, round or shaped bar, calibrated stock, strip, wire, pipe, forging or cut blank, dimensions and tolerances, normalized or other delivery condition, testing and certificate requirements, quantity and destination ZIP code.
Steel 20 (20A)
Steel 20 (20A): 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 20 (20A).
General steel 20 (20A)
| Substitute brand |
| steel 15, 25 |
| Delivery type |
| Pipe 20, sheet 20, circle 20, channel 20, long products, including shaped: GOST 1050−74, GOST 2590−71, GOST 2591−71, GOST 2879−69, GOST 8509−86, GOST 8510−86, GOST 8240−72, GOST 8239−72. Calibrated bar GOST 7417−75, GOST 8559−75, GOST 8560−78, GOST 10702−78. Polished bar and silver bar GOST 14955−77, GOST 10702−78. Thick sheet GOST 1577−81, GOST 19903−74. Thin sheet GOST 16523−70. Tape GOST 6009−74, GOST 10234−77. Strip GOST 1577−81, GOST 103−76, GOST 82−70. Wire GOST 5663−79, GOST 17305−71. Forgings and forged billets GOST 8479−70. Pipes GOST 10704−91, GOST 10705−80, GOST 8731−87, GOST 8732−78, GOST 8733−87, GOST 5654−76, GOST 550−75. |
| Application |
| After normalization or without heat treatment, crane hooks, couplings, bearing shells and other parts operating at temperatures from -40 to 450 ° C under pressure, after HTT — gears, worms and other parts that require high surface hardness with low core strength … |
Chemical composition of steel 20 (20A)
| Chemical element |
% |
| Silicon (Si) |
0.17−0.37 |
| Manganese (Mn) |
0.35−0.65 |
| 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) |
0.17−0.24 |
| Phosphorus (P), no more |
0.035 |
| Chromium (Cr), no more |
0.25 |
Mechanical properties of steel 20 (20A)
Mechanical properties at elevated temperatures
| test t, ° C |
σ 0.2, MPa |
σ B, MPa |
δ 5 ,% |
ψ,% |
KCU, J / m 2 |
| 20 |
280 |
430 |
34 |
67 |
218 |
| 200 |
230 |
405 |
28 |
67 |
186 |
| 300 |
170 |
415 |
29 |
64 |
188 |
| 400 |
150 |
340 |
39 |
81 |
100 |
| 500 |
140 |
245 |
40 |
86 |
88 |
| 700 |
|
130 |
39 |
94 |
|
| 800 |
|
89 |
51 |
96 |
|
| 900 |
|
75 |
55 |
100 |
|
| 1000 |
|
47 |
63 |
100 |
|
| 1100 |
|
thirty |
59 |
100 |
|
| 1200 |
|
20 |
64 |
100 |
|
Mechanical properties of rolled products
| Heat treatment, delivery condition |
σ B, MPa |
δ 5 ,% |
ψ,% |
KCU, J / m 2 |
| Calibrated hot-rolled steel, forged and silver grade 2 after normalization |
410 |
25 |
55 |
|
| Calibrated steel grade 5 after work-hardening |
490 |
7 |
40 |
|
| Calibrated steel grade 5 after annealing or high tempering |
390 |
21 |
50 |
|
| Calibrated and calibrated steel with special finishing after tempering or annealing |
390−490 |
|
50 |
163 |
| Calibrated and calibrated steel with special finishing after spheroidizing annealing |
340−440 |
|
50 |
163 |
| Steel calibrated and calibrated with a special finish, work-hardened without heat treatment |
490 |
7 |
40 |
207 |
| Normalized or hot rolled strips |
410 |
25 |
55 |
|
| Heat-treated sheet of the 1st-2nd category |
340−490 |
28 |
|
127 |
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 175 |
<100 |
175 |
350 |
28 |
55 |
64 |
101−143 |
| KP 175 |
100−300 |
175 |
350 |
24 |
50 |
59 |
101−143 |
| KP 175 |
300−500 |
175 |
350 |
22 |
45 |
54 |
101−143 |
| KP 175 |
500−800 |
175 |
350 |
20 |
40 |
49 |
101−143 |
| KP 195 |
<100 |
195 |
390 |
26 |
55 |
59 |
111−156 |
| KP 195 |
100−300 |
195 |
390 |
23 |
50 |
54 |
111−156 |
| KP 215 |
<100 |
215 |
430 |
24 |
53 |
54 |
123−167 |
| KP 215 |
100−300 |
215 |
430 |
20 |
48 |
49 |
123−167 |
| Hardening. Vacation. |
| KP 245 |
100−300 |
245 |
470 |
19 |
42 |
39 |
143−179 |
Mechanical properties of steel after HTT
| Section, mm |
σ 0.2, MPa |
σ B, MPa |
δ 5 ,% |
ψ,% |
KCU, J / m 2 |
HB |
HRC e |
| Cementation 920−950 ° С, air. Hardening 800−820 ° C, water. Vacation 180−200 ° C, air. |
| 50 |
290−340 |
490−590 |
eighteen |
45 |
54 |
156 |
55−63 |
Technological properties of steel 20 (20A)
| Forging temperature |
| Beginning 1280, end 750. Air cooling. |
| Weldability |
| It can be welded without restrictions, except for parts after chemical heat treatment. Methods of welding RDS, ADS submerged arc and gas shielded, KTS. |
| Machinability by cutting |
| In the hot-rolled state at HB 126−131 and σ B = 450−490 MPa, K υ tv.spl. = 1.7 and K υ b.st. = 1.6. |
| Tendency to release ability |
| Not inclined. |
| Flock sensitivity |
| Not sensitive. |
Temperature of critical points of steel 20 (20A)
| Critical point |
° C |
| Ac1 |
735 |
| Ac3 |
850 |
| Ar3 |
835 |
| Ar1 |
680 |
Impact strength of steel 20 (20A)
Impact strength, KCU, J / cm 2
| Delivery status, heat treatment |
+20 |
-20 |
-40 |
-60 |
| Annealing |
110 |
68 |
47 |
ten |
| Nominalization |
157 |
109 |
86 |
15−38 |
Endurance limit of steel 20 (20A)
| σ -1, MPa |
τ -1, MPa |
n |
σ B, MPa |
σ 0.2, MPa |
Heat treatment, steel condition |
| 206 |
|
1E + 7 |
500 |
320 |
|
| 245 |
|
|
520 |
310 |
|
| 225 |
|
|
490 |
280 |
|
| 205 |
127 |
|
|
|
Normalization 910 C, tempering 620 C. |
| 193 |
|
|
420 |
280 |
|
| 255 |
451 |
|
|
|
Cementation 930 C, hardening 810 C, tempering 190 C. |
Physical properties of steel 20 (20A)
| Test temperature, ° С |
20 |
100 |
200 |
300 |
400 |
500 |
600 |
700 |
800 |
900 |
| Normal elastic modulus, E, GPa |
212 |
208 |
203 |
197 |
189 |
177 |
163 |
140 |
|
|
| Torsional shear elastic modulus G, GPa |
78 |
77 |
76 |
73 |
69 |
66 |
59 |
|
|
|
| Density of steel, pn, kg / m 3 |
7859 |
7834 |
7803 |
7770 |
7736 |
7699 |
7659 |
7917 |
7624 |
7600 |
| Thermal conductivity coefficient W / (m ° С) |
|
51 |
49 |
44 |
43 |
39 |
36 |
32 |
26 |
26 |
| Ud. electrical resistance (p, Nom. m) |
|
219 |
292 |
381 |
487 |
601 |
758 |
925 |
1094 |
1135 |
| 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) |
12.3 |
13.1 |
13.8 |
14.3 |
14.8 |
15.1 |
15.2 |
|
|
|
| Specific heat (C, J / (kg ° C)) |
486 |
498 |
514 |
533 |
555 |
584 |
636 |
703 |
703 |
695 |
