Characteristics of 30MnB5-brand steel

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: Strong, durable, high-grade steel.

Product: Bars, forgings, flat-rolled products.

 

Chemical composition of 30MnB5 steel, %

С

Si

 Mn

P

S

B

0,27-0,33

<0,4
1,15-1,45
<0,025
0,015
0,0008-0,0050

 

Mechanical properties of 30MnB5 steel

Nominal gauge, mm

Minimum yield strength, ReH (MPa)

Ultimate tensile strength, Rm (MPa)

Minimum elongation ratio σ, %

> t ≤ 8

800

 950-1150

13

8 < t  ≤ 20

650

 800-950

13

 

Analogues to 30MnB5 steel

Germany (DIN)

34MnB5 

 

Application

Flat products made from 30MnB5 steel are used widely in agricultural-machinery production for making wear plates, grader blades, caterpillar tracks, 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.

 

Welding

Boric steel can be welded in its hot-rolled or quenched states, using the corresponding welding material. The general recommendation is to use low-hydrogen welding materials. Boric steel can be welded in its hot-rolled state using standard welding equipment for high-tensile steel.

 

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