Astm spring and spring steel
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Characteristics of parameters in the ASTM standards system
High-carbon spring and spring steels are used in various industries, except for situations when the product operates at low or high temperatures, and is constantly subjected to shock or dynamic loads.
High-carbon spring wire is available in the following grades:
| Material | For strings of musical instruments ASTM A 228 |
Hard ASTM A 277 |
For tension springs ASTM A 679 | When working in conditions of high temperatures ASTM A 229 |
In metallo-carbon composite composites ASTM A 230 |
| Presence of basic elements | C = 0.70… 1.00% Mn = 0.20… 0.60% |
C is 0.45 to 0.85% Mn = 0.60… 1.30% |
C = 0.65… 1.00% Mn = 0.20… 1.30% |
C-0.55 to 0.85% Mn = 0.60… 1.20% |
C = 0.60 to 0.75% Mn = 0.60… 0.90% |
Ultimate strength, MPa |
2300 | By separate standards | 2380 | By separate standards | 2250 |
| Young’s modulus, GPa | thirty | thirty | thirty | thirty | thirty |
| The greatest loading of a structure,% | 45 | 40 | 45 | 45 | 45 |
| Tensile strength, GPa | 11.5 | 11.5 | 11.5 | 11.5 | 11.5 |
| Maximum operating temperature, 0С | 250 | 250 | 250 | 250 | 250 |
| Maximum application temperature, ° С | 50 | 50 | 50 | 50 | 50 |
| Hardness by Rockwell HRC | 41… 60 | 31… 52 | 41… 60 | 42… 55 | 45… 49 |
| Method of production | Cold drawing | Cold drawing | Cold drawing | Cold rolling followed by heat treatment | Half-hot rolling or extrusion followed by heat treatment |
Supplier Avlob offers to buy spring and spring steel at a bargain price. The price is the best in this segment of the… Supply of high-carbon steels for the production of flat springs
is performed in the form of strips, while the carbon content reaches 0.85%. The steels are very susceptible to hydrogen embrittlement, so the final operations for their preparation are the application of special coatings. The hardness of flat springs is within 45… 47 HRC.
ASTM A864 provides the following options for heat treatment of the strip, made of steel spring-spring class:
| alloy | Hardness, HRB | Carbon,% | Manganese,% | Silicon,% |
| 1050 | Not less than 84 | 0.48… 0.55 | 0.60… 0.90 | 0,15… 0,30 |
| 1074/1075 | At least 86 | 0.70… 0.80 | 0.50 to 0.70 | 0,15… 0,30 |
| 1095 | At least 86 | 0.90… 1.03 | 0.30… 0.50 | 0,15… 0,30 |
| Type of heat treatment | AISI — 1050 — SAE | AISI-1074-SAE |
| Normalization | 1550 — 1650 F | 1550 — 1650 F |
| Annealing temperature | 1400 — 1550 F | 1475 — 1500 F |
| Hardening | 1500 — 1550 F | 1475−1550 F |
| Hardness by Rockwell HRC after quenching in oil | 58 | 64 |
| Annealing temperature | Hardness by Rockwell HRC | Hardness by Rockwell HRC |
| 400 F | 52 | 59 |
| 600 F | 45 | 53 |
| 700 F | 39 | 47 |
| 800 F | 35 | 44 |
| 900 F | 31 | 40 |
Delivery, price
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