45Kh / 45Cr Structural Steel
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Auremo LLC handles U.S. sourcing inquiries for 45Kh / 45Cr structural steel. Include the required product form, dimensions, heat-treatment condition, quantity, documentation and applicable specification.
Product forms
- Round bar
- Sheet and strip
- Forgings
- Billets and custom blanks subject to review
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 45Kh / 45Cr structural steel 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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Designation
| Name | The value |
|---|---|
| Designation GOST Cyrillic | 45Х |
| Designation GOST Latin | 45X |
| Transliteration | 45H |
| The chemical elements | 45Cr |
Description
45KH steel is used: for the manufacture of shafts, gears, axles, bolts, connecting rods and other parts, to which pedalada requirements of high hardness, wear resistance, durability and running with little impact.
Note
Structural steel high-quality chrome.
Standards
| Name | Code | Standards |
|---|---|---|
| Sectional and shaped rolling | В32 | GOST 1051-73, GOST 4543-71, GOST 7417-75, GOST 8559-75, GOST 8560-78, GOST 10702-78, GOST 14955-77, TU 14-1-5414-2001, TU 14-1-2118-77, TU 14-11-245-88, TU 14-1-1271-75, TU 14-1-5228-93, TU 14-136-367-2008 |
| Sheets and stripes | В33 | GOST 1577-93 |
| Sheets and stripes | В23 | GOST 82-70, GOST 19903-74, GOST 103-2006, GOST 19903-90 |
| Sectional and shaped rolling | В22 | GOST 8278-83, GOST 8281-80, GOST 8282-83, GOST 8283-93, GOST 8319.0-75, GOST 9234-74, GOST 11474-76, GOST 2590-2006, GOST 2591-2006 |
| Metal forming. Forgings | В03 | GOST 8479-70, ST ЦКБА 010-2004 |
| Bulls. Blanks. Slabs | В31 | OST 3-1686-90, TU 14-1-4944-90 |
Chemical composition
| Standard | C | S | P | Mn | Cr | Si | Ni | Fe | Cu | V | Ti | Mo | W |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GOST 4543-71 | 0.41-0.49 | ≤0.035 | ≤0.035 | 0.5-0.8 | 0.8-1.1 | 0.17-0.37 | ≤0.3 | The rest | ≤0.3 | ≤0.05 | ≤0.03 | ≤0.15 | ≤0.2 |
| GOST 10702-78 | 0.41-0.49 | ≤0.035 | ≤0.035 | 0.5-0.8 | 0.8-1.1 | ≤0.2 | ≤0.3 | The rest | ≤0.3 | ≤0.05 | ≤0.03 | ≤0.15 | ≤0.2 |
Fe is the basis.
According to GOST 4543-71 the content in high-quality steel is regulated: P≤0,025%; S≤0.025%; Сu≤0.30%; in high-grade steel: P≤0,025%; S≤0.015%; Сu≤0.25%. In accordance with the order, the content of Si = 0.10-0.37% can be established.
According to GOST 4543-71 the content in high-quality steel is regulated: P≤0,025%; S≤0.025%; Сu≤0.30%; in high-grade steel: P≤0,025%; S≤0.015%; Сu≤0.25%. In accordance with the order, the content of Si = 0.10-0.37% can be established.
Mechanical characteristics
| Section, mm | t отпуска, °C | sT|s0,2, MPa | σB, MPa | d5, % | y, % | kJ/m2, кДж/м2 | Brinell hardness number, MPa |
|---|---|---|---|---|---|---|---|
| Hot-rolled steel and hot rolled with special surface finish | |||||||
| - | - | - | - | - | - | - | ≤179 |
| Steel calibrated and calibrated with special surface finish | |||||||
| - | - | - | - | - | - | - | ≤229 |
| - | - | - | - | - | - | - | ≤229 |
| Quenching in oil from 840 °C to + vacation at 520 °C, cooling in water | |||||||
| 25 | - | 835 | 1030 | 9 | 45 | 490 | - |
| Hardening + Vacation | |||||||
| 500-800 | - | 315 | 570 | 11 | 30 | 290 | 167-207 |
| A rod with a diameter of 25 mm. Quenching in oil from 830 °C | |||||||
| - | 300 | 1490 | 1710 | 10 | 27 | - | 500 |
| Hardening + Vacation | |||||||
| 100-300 | - | 395 | 615 | 15 | 40 | 540 | 187-229 |
| A rod with a diameter of 25 mm. Quenching in oil from 830 °C | |||||||
| - | 400 | 1270 | 1490 | 12 | 37 | - | 450 |
| Hardening + Vacation | |||||||
| 300-500 | - | 395 | 615 | 13 | 35 | 490 | 187-229 |
| A rod with a diameter of 25 mm. Quenching in oil from 830 °C | |||||||
| - | 500 | 1130 | 1240 | 17 | 50 | - | 375 |
| Hardening + Vacation | |||||||
| 500-800 | - | 395 | 590 | 12 | 33 | 390 | 174-217 |
| A rod with a diameter of 25 mm. Quenching in oil from 830 °C | |||||||
| - | 600 | 880 | 1030 | 21 | 60 | - | 300 |
| Hardening + Vacation | |||||||
| 100-300 | - | 440 | 635 | 14 | 40 | 540 | 197-235 |
| A rod with a diameter of 50 mm. Quenching in oil with 820 °C | |||||||
| - | 400 | 1490 | 1600 | 4 | 40 | - | - |
| Hardening + Vacation | |||||||
| 300-500 | - | 440 | 635 | 13 | 35 | 490 | 197-235 |
| A rod with a diameter of 50 mm. Quenching in oil with 820 °C | |||||||
| - | 500 | 1080 | 1190 | 10 | 52 | - | - |
| Hardening + Vacation | |||||||
| ≤100 | - | 490 | 655 | 16 | 45 | 590 | 212-248 |
| A rod with a diameter of 50 mm. Quenching in oil with 820 °C | |||||||
| - | 600 | 540 | 640 | 20 | 60 | - | - |
| Hardening + Vacation | |||||||
| 100-300 | - | 490 | 655 | 13 | 40 | 540 | 212-248 |
| 100-300 | - | 540 | 685 | 13 | 40 | 490 | 223-262 |
| ≤100 | - | 590 | 735 | 14 | 45 | 590 | 235-277 |
| ≤100 | - | 640 | 785 | 13 | 42 | 590 | 248-293 |
| Normalization | |||||||
| ≤100 | - | 315 | 570 | 17 | 38 | 390 | 167-207 |
| 300-500 | - | 315 | 570 | 12 | 30 | 290 | 167-207 |
| 500-800 | - | 315 | 570 | 11 | 30 | 290 | 167-207 |
| ≤100 | - | 345 | 590 | 18 | 45 | 590 | 174-217 |
| 100-300 | - | 345 | 590 | 17 | 40 | 540 | 174-217 |
| 300-500 | - | 345 | 590 | 14 | 38 | 490 | 174-217 |
Description mechanical marks
| Name | Description |
|---|---|
| Section | Section |
| sT|s0,2 | Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σB | Limit short-term strength |
| d5 | Elongation after rupture |
| y | The relative narrowing |
| kJ/m2 | Toughness |
Physical characteristics
| Temperature | Е, ГПа | G, ГПа | r, кг/м3 | a, 10-6 1/°С |
|---|---|---|---|---|
| 0 | 206 | 78 | 7820 | - |
| 20 | 206 | - | 7820 | - |
| 100 | - | - | - | 128 |
| 200 | - | - | - | 13 |
| 300 | - | - | - | 13 |
| 500 | - | - | - | 137 |
A description of the physical symbols
| Name | Description |
|---|---|
| Е | The normal elasticity modulus |
| G | Modulus of elasticity shear torsion |
| r | Density |
| l | Coefficient of thermal conductivity |
| R | UD. the resistivity |
Technological properties
| Name | The value |
|---|---|
| Weldability | Difficult weldability. Welding methods: RDS - necessary heating and subsequent heat treatment. CCC - a necessary subsequent heat treatment. |
| Propensity to temper brittleness | Inclined. |
| Forging temperature | Start - 1250 °C, the end - 780 °C. the cross Sections up to 100 mm are cooled in air, 101-300 mm - mulde. |
| Flock-sensitive sensitivity | Sensitive. |
