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50Mn Carbon Structural Steel

50Mn Carbon Structural Steel

Place of Origin : China
Brand Name : XJS
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Description:

50Mnis a kind of high-quality carbon structural steel bar which under GB/T 699-1999 standard. Strength, elasticity and hardness are higher, Used after quenching and tempering, poor welding performance.

heat treatment:

Quenching, Annealing, Normalizing and Tempering.

Chemical composition


Grade

Chemical composition %:

C

Si

Mn

S

P

Cr

Ni

Cu

50Mn

0.48-0.56

0.17-0.37

0.70-1.00

≤0.035

≤0.035

≤0.25

≤0.30

≤0.25

mechanical properties:


Grade

mechanical properties:

Tensile strength σb
(Mpa)

Yield strength σb
(Mpa)

Elongation σb
(%)

reduction of area
ψ (%)

Hardness
No heat treatment

Impacting Energy Akv (J)

Notched bar impact strength
αkv (J/cm2)

min

min

min

min

max

min

min

50Mn

645(66)

390(40)

13

40

255HB

31

39(4)


Heat treatment:

No heat treatment ≤255HB; annealing ≤217HB

830℃ normalizing

830℃ quenching

600℃ tempering


Application:

50Mn is used in the manufacture of high requirement of abrasion resistance, high load under the action of heat treatment of parts, such as gear, gear shaft and cross section under 80 mm spindle, etc. The property of 50Mn is similar with 50# steel. But 50Mn’s hardenability is higher, 50Mn’s strength, hardness, elasticity is higher than 50# steel. 50Mn has poor weldability, sensitivity and temper brittleness tendency for overheating. 50Mn is used as a stress parts, high wear-resistant parts, high stress components, such as spindle less than 80 mm in diameter. After high frequency quenching ,50Mn can also manufacture train axle, worm, and automotive crankshaft, connecting rod, such as gears. Gear, shaft. The friction plate. Spindle. Flat spring, etc.



Product Tags:

Carbon Structural Steel

      
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