Steel 16ГНМА
Designation
| Name |
The value |
| Designation GOST Cyrillic |
16ГНМА |
| Designation GOST Latin |
16GHMA |
| Transliteration |
16GNMA |
| The chemical elements |
16MnНMo |
Description
16ГНМА steel is used: for the manufacture of parts such as bottoms, collar flanges, fittings, rings, tubes, tees, drums of high-pressure boilers and parts of rectangular shape for power equipment and pipelines with an absolute pressure of more than 3.9 MPa, thermal power plants.
Note
Carbon structural steel high quality.
Standards
| Name |
Code |
Standards |
| Metal forming. Forgings |
В03 |
OST 108.030.113-87 |
| Sheets and stripes |
В33 |
OST 108.030.118-78 |
Mechanical characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d5, % |
y, % |
kJ/m2, кДж/м2 |
| Rolled sheet with a thickness of 115 mm for OST 108.030.118-78. The transverse samples. Normalization at 930±10 °C (extract 1 min per 1 mm thickness), cooling for extended hearth or air + Vacation at 630-670 °C (exposure 6 minutes per 1 mm thickness), cooling with the oven up to 400 °C at a speed of not more than 50°C/hour, then air cooling |
| ??? |
- |
- |
- |
- |
≥392 |
| 20 |
323-510 |
≥500 |
≥20 |
≥50 |
≥785 |
| 350 |
≥255 |
≥440 |
- |
- |
- |
| 20 |
- |
- |
- |
- |
≥392 |
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 |
Technological properties
| Name |
The value |
| Macrostructure and contamination |
The macrostructure of the steel on the etched templeto visual inspection should not have delamination, placenow, shrinkage looseness. Allowed separate volosovichi and non-metallic inclusions is no longer than 15 mm. the Macrostructure of the investigated template should be compared with the sulfur prints, thus, discovered on microtemplate strokes of any length, coinciding with liquate-services clusters in sulfur print, the discontinuities (layers, flocs, golosovanie) are not considered. The degree of phase separation homogeneity and density of the metal are characterized by sulfur print, which should correspond to the points 1-4 of sulfur prints made of carbon steel and alloy steel approved Intimacies. |
