EN10083-3 30MnB5 and 38MnB5 alloy steel technical data

EN10083-3 30MnB5 and 38MnB5 alloy steel technical data

EN10083-3 30MnB5 and 38MnB5 alloy steel technical data

EN 10083-3 30MnB5 steel and 38MnB5 alloy belong to a boric steel for tempering and quenching, suitable for items and components that are strong, durable and able to withstand high mechanical loads. Boric steel can be welded in its hot-rolled or quenched s

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EN10083-3 30MnB5 and 38MnB5 alloy steel technical data

EN10083-3 30MnB5 and 38MnB5 alloy steel 
Grade: 30MnB5,38MnB5
Standard: EN 10083-3: 2006
30MnB5 material number: 1.5531
38MnB5 material number: 1.5532
Category: alloy steel for quenching and tempering
EN 10083-3 30MnB5 steel and 38MnB5 alloy belong to a boric steel for tempering and quenching, suitable for items and components that are strong, durable and able to withstand high mechanical loads. 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.

EN10083-3 30MnB5 and 38MnB5 steel technical data
Chemical composition(%)


Material

C

Si max

Mn

P max.

S max

B

30MnB5

0.27- 0.33

0.40

1.15- 1.45

0.025

0.035

0.0008-0.0050

38MnB5

0.36-0.42

0.40

1.15- 1.45

0.025

0.035

0.0008-0.0050

Mechanical properties at room temperature


Grade

t ≤ 8mm

8mm < t ≤ 20mm

Re min

Rm

A min

Re min

Rm

A min

MPa

MPa

%

MPa

MPa

%

30MnB5

800

950-1150

13

650

800 - 950

13

38MnB5

900

1050-1250

12

700

850 - 1050

12

Note: Re: upper yield strength
Rm: tensile strength
A: percentage elongation after fracture.

30MnB5 and 38MnB5 alloy steel plate specifications
Plate steel/flat bar: Size: Thickness: 0.1mm-800mm Width: 10mm to 1500mm
Round bar: Diameter: 1mm-2000mm
Square bar: Size: 50mm * 50mm-600mm *600mm
Cold-rolled sheet: Thickness: 2-5mm Width:1000mm Length: 2000mm
Hot-rolled sheet: Thickness:6-80mm Width: 210-610mm
Length: as customer requirement.
Manufacturing: forging/hot rolling/ extrusion of steel

EN10083-3 30MnB5 steel and DIN equivalent alloys are structural alloys used in the engineering industry for heavy-duty spring components and oil hardened springs. Due to its special properties, 30MnB5 alloy steel is used in the field of the aircraft industry, automobile, boats, ships, metallurgy, chemical industry and etc. As the material of ships, it usually is used in the low-temperature condition.

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