EN 10083-3 30MnB5 1.5531 alloy steel plate
30MnB5 is a boric steel for tempering and quenching, suitable for items and components that are strong, durable and able to withstand high mechanical loads.
Classification: Alloy steel for tempering and quenching
Application: Flat products made from 30MnB5 steel are used widely in agricultural-machinery production for making wear plates, grader blades, lining and sorting plates, crushing plant, knives and blades, beaters, hand tools, ploughs, harrow discs, etc. 30MnB5 steel had advantages over its peers in that in its hot-rolled state, it is very ductile and better withstands cold moulding and cutting. Quenching and tempering leaves the steel very strong and hard, increasing the durability of the finished components, which tend to have lifespans double or triple those of items made from 65G steel.
| Grade : |
30MnB5 |
| Number: |
1.5531 |
| Classification: |
Alloy special steel with boron |
| Standard: |
EN 10083-3: 2006 Steels for quenching and tempering. Technical delivery conditions for alloy steels |
| Equivalent grades: |
No information |
Chemical composition % of steel 30MnB5 (1.5531): EN 10083-3-2006
| C |
Si |
Mn |
P |
S |
B |
| 0.27 - 0.33 |
max 0.4 |
1.15 - 1.45 |
max 0.025 |
max 0.035 |
0.0008 - 0.005 |
Mechanical properties of steel 30MnB5 (1.5531)
| Nominal diameter (mm): |
to 16 |
16 - 40 |
|
| Rm - Tensile strength (MPa) (+QT) |
950-1150 |
800-950 |
| Nominal diameter(mm): or for flat products thickness: to 8; 8-20; |
to 16 |
16 - 40 |
|
Re - Upper yield strength or
Rp0.2 - 0.2% proof strength (MPa) (+QT) |
800 |
650 |
| Nominal thickness (mm): |
to 16 |
16 - 40 |
|
| A - Min. elongation Lo = 5,65 √ So (%) (+QT), round products |
13 |
13 |
| Nominal diameter (mm): or for flat products thickness: to 8; 8-20; |
to 16 |
16 - 40 |
|
| Z - Reduction in cross section on fracture (%) (+QT) |
50 |
50 |
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