C50 steel bar,C50 steel plate,C50 steel specification and chemical

Si

Mn

Cr

Mo

Ni

V

W

Others

0.51

0.20

0.75

0.20

0.05

0.20

-

-

-

Cold pull hardness
HBS

Preheating temperature
℃

Quenching temperature
℃

Holding time
min

Hardening medium

Temper temperature
℃

After tempering hardness
≥HRC

salt-bath furnace

controlled atmosphere furnace

235

262

788

1191

1204

5～15

air cooling

522

60

Steel plate/Sheet
thickness / mm

σb
MPa

σs
≥/MPa

δ
Samples from the standard for 50 mm (2 in)

180 ° of cold bending test

longitudinal

horizontal

Hot-rolled/Cold rolling:5 - 150

520

415

16～18

2a

3.5a

Note:
(1) listed in the table apex diameter (d), to steel thickness (a) multiples said.
(2) in the ASTM A6 standard specified scope can meet any additional conditions.
(3) from the standard for 50 mm (2 in).
Mechanical properties
Mechanische Eigenschaften
Caracteristiques mecaniques
ReH Minimum yield strength / Mindestwert der oberen Streckgrenze / Limite d’elasticite minimale
Rm Tensile strength / Zugfestigkeit / Resistance a la traction
A Minimum elongation / Mindestwert der Bruchdehnung / Allongement minimal
J Notch impact test / Kerbschlagbiegeversuch / Essai de flexion par choc