Designation
| Name |
The value |
| Designation GOST Cyrillic |
12ХСНД |
| Designation GOST Latin |
12XCHD |
| Transliteration |
12HSND |
| By chemical elements |
12CrСНCu |
Description
12ХСНД steel is used: for the manufacture of welded steel elements and various details and requirements of high strength and corrosion resistance with the restriction of mass and operating at temperatures from -70 to +450 °C; rolled, intended for the manufacture of bridge structures normal Northern execution; load-bearing elements of various welded structures.
Note
Chronographically low alloy steel with copper. The degree of deoxidation — SP.
Standards
| Name |
Code |
Standards |
| Sheets and strips |
В33 |
TU 14-1-5241-93 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
As |
| TU 14-1-5241-93 |
≤0.15 |
≤0.04 |
≤0.04 |
0.6-0.9 |
0.7-1 |
0.9-1.1 |
0.5-0.8 |
Rest |
0.4-0.6 |
≤0.08 |
Fe is the basis.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
d5, % |
| Sheet metal as supplied at TU 14-1-5241-93 (samples transverse) |
| 12-40 |
≥410 |
≥530 |
≥19 |
| 8-12 |
≥400 |
≥530 |
≥19 |
Description mechanical marks
| Name |
Description |
| sT|s0,2 |
Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σU |
Limit short-term strength |
| d5 |
Elongation after rupture |
Technological properties
| Name |
The value |
| Weldability |
Welded without any restrictions. Welding methods: SMAW, ADS submerged arc and gas protection electroslag welding. |
| Склонность к отпускной хрупкости |
Malosolone. |
| The temperature of forging |
Start - 1180 °C, the end - 840 °C. |
| Flock-sensitive sensitivity |
not sensitive. |
| Machinability |
In the normalized released condition when blower SB=560 MPa Kn TV.SPL.=1,4 Kn b.St.=1,12. |
| Corrosion resistance |
Steel malosana to brittleness, therefore welds are prone to cracking. |
