Spring spring steel marking
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Principles of marking
Particularly responsible products are made of alloy steels with the addition of vanadium chromium, nickel) and other elements. The marking of alloy steel in Russia consists of a combination of letters and numbers reflecting its composition. Alloying elements have the following designation:
| Element | Chem. symbol | Marking |
| Aluminum | Al | YU |
| Bor | B | R |
| Vanadium | V | F |
| Tungsten | W | AT |
| Cobalt | Co | TO |
| Manganese | Mn | D |
| Molybdenum | Mo | M |
| Copper | Cu | D |
| Nickel | Ni | H |
| Niobium | Nb | B |
| Rare earth metals | --- | H |
| Selenium | Se | E |
| Tantalum | Ta | TT |
| Titanium | , Ti | T |
| Chromium | Cr | X |
| Zirconium | Zr | C |
The supplier Avlob offers to buy alloy steel at a bargain price. The price is the best in this segment of rental.
Compliance with foreign standards GOST 14959−89
| Germany | Explanation | European Union | ISO-standard | England | France | Italy |
| DIN 17221 | Rolled in a hot state with subsequent annealing | EU 89 | DIS 683/14 | BS 970−2 | NFA 35−571 | UNI 3545 |
| DIN 17224 | Assortment — wire and tape | EU 151 | ISO 6931/1 | BS 2056−83 | - | - |
Examples of marking of alloy steels that are intended for the manufacture of springs and springs, and allowed by GOST 14959−89: st.50HG, st.50HGA, st.50HGFA, st.50HCA, st.50hfa, st.51HFA, st.55S2, st. 55С2А, st.55С2ГФ, st.55ХГР, st.60Г, st.60С2, st.60С2А, st.60С2Г, st.60С2Н2А, st.60С2ХА, st.60С2ХФА, st.65HA, st.65С2ВА, st.68GA, st.70G, st.70C3A. The first number in the numerically-alphabetic abbreviation means the carbon content in hundredths of a percent.
Delivery, price
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