Steel grade 30 is a high-quality structural steel used when
manufacturing parts of low strength, including cylinders, spindles,
shafts, couplings, levers and rods.
Classification: High-quality structural carbon steel.
Products: Flat-rolled steel, including shaped.
Chemical composition of steel 30 according to ladle sample in
accordance with DSTU 7809 and GOST 1050, %
Chemical composition of steel 30 according to ladle sample in
accordance with DSTU 7809 and GOST 1050, %
| С | Si | Mn | S | P | Cr |
| 0.27-0.35 | 0.17-0.37 | 0.5-0.8 | <0.04 | <0.035 | <0.25 |
Mechanical properties of steel 30 after normalising
| Minimum yield strength, MPa | Minimum temporary resistance, MPa | Minimum relative elongation, % | Minimum relative reduction, % |
| 295 | 490 | 21 | 50 |
Steel 30 analogues
| US | 1030, G10300, M1031 |
| Germany | 1.0528, C30, C30E, Ck30 |
| Japan | S28C, S30C, S33C, SWRCH30K, SWRCH33K |
| France | C30E, FR32, XC32 |
| UK | 080M32 |
| EU | 1.0528, 1.1178, C30, C30E |
| Italy | C30, C30E, C30R |
| China | 30, ML25Mn, ML30 |
| Bulgaria | 30 |
| Poland | 30, 30A, 30rs |
| Romania | OLC30 |
| Czech Republic | 12031 |
Application
Steel grade 30 has an average level of strength characteristics,
which allows it to be used when manufacturing traverses and levers,
shafts, sprockets, rods, couplings and other low-loaded parts.
Welding
Steel grade 30 has limited weldability. The main welding methods
include electroslag welding, automatic arc welding, and manual
submerged and shielded arc welding. Heat treatment is recommended
when preparing the material.
