Steel 15 / Stal 15 Composition and Properties
Request Steel 15 / Stal 15 Material
Auremo LLC supports U.S. sourcing inquiries for Steel 15 / Stal 15 low-carbon structural steel. Send the required product form, dimensions, condition, quantity, documentation and applicable specification.
Product forms
- Bar and profiles
- Sheet and strip
- Wire
- Pipe and tube subject to review
- Forgings and blanks
Information to include in your request
Please provide the material grade or specification, product form, dimensions and tolerances, quantity, delivery ZIP code and required documentation. Pricing, availability and lead time are confirmed for each quotation.
Frequently asked questions
How is the price for Steel 15 / Stal 15 products confirmed?
The quotation is based on the exact grade, dimensions, tolerances, quantity, documentation and delivery requirements supplied with the inquiry.
Can non-standard dimensions be requested?
Yes. Send a drawing or dimensional requirements with the inquiry. Manufacturing or sourcing feasibility is confirmed during quotation.
What information is available for delivery in the United States?
Provide the destination ZIP code. Available freight options, lead time and delivery terms will be included in the commercial response.
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Description
Steel 15
Steel 15: 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 15.
General steel 15
| Substitute brand |
| steel: steel 10, 20 |
| Delivery type |
| Long products, including shaped: GOST 1050−74, GOST 2591−71, GOST 2879−69, GOST 8509−86, GOST 8510−86, GOST 8240−72, GOST 8239−72, GOST 2590−71. Calibrated bar GOST 7417−75, GOST 8559−75, GOST 8560−78, GOST 10702−78. Polished path and silver metal GOST 14955−77, GOST 10702−78. Thick sheet GOST 1577−81, GOST 19903−74. Thin sheet GOST 16523−70. Tape GOST 6009−74, GOST 2284−79, GOST 10234−77. Strip GOST 103−76, GOST 82−70. Wire GOST 5663−79, GOST 17305−71. Forgings and forged billets GOST 8479−70. Pipes GOST 10705−80, GOST 10704−91. |
| Application |
| Bolts, screws, hooks and other parts that require high ductility and work at temperatures from -40 to 450 ° C; after HTT — levers, cams, nuts and other parts, which are subject to the requirements of high surface hardness and low core strength. |
Chemical composition of steel 15
| 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) | 0.12−0.19 |
| Phosphorus (P), no more | 0.035 |
| Chromium (Cr), no more | 0.25 |
Mechanical properties of steel 15
| Heat treatment, delivery condition | σ B, MPa | δ 5 ,% | δ 4 ,% | ψ,% | HB |
| Hot rolled steel, forged, calibrated and silver grade 2 after normalization. | 375 | 27 | 55 | ||
| Calibrated steel grade 5 after annealing or high tempering | 345 | 23 | 55 | ||
| Calibrated and calibrated steel with special finishing after annealing or tempering | 365−470 | 55 | 149 | ||
| Calibrated and calibrated steel with special finishing after spheroidizing annealing | 325−420 | 55 | 149 | ||
| Steel calibrated and calibrated with a special finish, work-hardened without heat treatment | 440 | 8 | 45 | 197 | |
| Normalized or hot rolled strips | 370 | 27 | 55 | ||
| Hot rolled sheet | 330−460 | 23 | |||
| Cold rolled sheet | 330−460 | 24 |
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 | |||||||
| Nominalization | ||||||||||||||
| KP 175 | <100 | 175 | 355 | 28 | 55 | 64 | 101−143 | |||||||
| KP 175 | 100−300 | 175 | 355 | 24 | 50 | 59 | 101−143 | |||||||
| KP 195 | <100 | 195 | 390 | 26 | 55 | 59 | 111−156 | |||||||
Technological properties of steel 15
| Forging temperature |
| Beginning 1300, end 700. Air cooling. |
| Weldability |
| No restrictions, except for XTO parts; welding methods: RDS, ADS submerged arc and gas protection, KTS. |
| Machinability by cutting |
| In the hot-rolled state at HB 143 K υ tv.spl. = 1.8. |
| Tendency to release ability |
| Not inclined. |
| Flock sensitivity |
| Not sensitive. |
Temperature of critical points of steel 15
| Critical point | ° C |
| Ac1 | 735 |
| Ac3 | 860 |
| Ar3 | 840 |
| Ar1 | 685 |
Impact strength of steel 15
Impact strength, KCU, J / cm 2
| Delivery status, heat treatment | +20 | -20 | -40 | -60 |
| Hot rolled | 73−113 | 75−86 | 14−26 | sixteen |
| Annealed | 82−84 | 49−57 | 14−35 | 8 |
| Normalized | 120 | 53−80 | 66 | 48−65 |
Hardenability of steel 15
Hardness for hardenability strips, HRB.
| Distance from the end, mm / HRC e | |||||||||||
| 1.5 | 3 | 4.5 | 6 | 12 | fifteen | eighteen | 21 | 24 | |||
| 102−108 | 94−99 | 90−96 | 88−91.5 | 82.5−99 | 79.5−87 | 78−84 | 75.5−81.5 | 74−80 | |||
Physical properties of steel 15
| Test temperature, ° С | 20 | 100 | 200 | 300 | 400 | 500 | 600 | 700 | 800 | 900 |
| Normal elastic modulus, E, GPa | 201 | 192 | 185 | 176 | 156 | |||||
| Torsional shear elastic modulus G, GPa | 83 | 78 | 77 | 74 | 71 | 68 | 63 | |||
| Density of steel, pn, kg / m 3 | 7850 | 7828 | 7794 | 7759 | 7724 | 7687 | 7648 | 7611 | 7599 | 7584 |
| Thermal conductivity coefficient W / (m ° С) | 53 | 53 | 53 | 49 | 46 | 43 | 39 | 36 | 32 | thirty |
| Ud. electrical resistance (p, Nom. m) | 233 | 296 | 387 | 487 | 607 | 753 | 904 | 1092 | 1140 | |
| 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) | 12.4 | 13.2 | 13.9 | 14.4 | 14.8 | 15.1 | 15.3 | 14.1 | 13.2 | 13.3 |
| Specific heat (C, J / (kg ° C)) | 465 | 486 | 515 | 532 | 565 | 586 | 620 | 691 | 708 |
