Alloy Steel Round Bar

Minimum Order Quantity

200 Kg

Coefficient of thermal expansionat Degree C

20-700

Cooling

Slowly

Hardening Degree C

1000-1130

Hardness after quenching HRC

53

Hardness HB

Max 240

Length

3 - 18 Meter

Material

Alloy Steel

Quenching

Oil or Hot Bath,600-650 degree C

Soft annealing Degree C

780-810

Application

Construction

Shape

Rounds

STANDARDS

X30WCrV-3

H21

DIN 2581

AISI H21

AFNOR 32CDV12-28

JIS SKD5

C

Si

Mn

P

S

Cr

W

V

0.26-0.36

0.15-0.25

0.20-0.40

0.003 max

0.030max

3.00-3.75

8.50-10.00

0.30-0.60

USA

France

Germany

China

Japan

England

Sweden

AISI / SAE

AFNOR

DIN, WNr

GB

JIS

BS

H21 / T20821

X30WCrV9

X30WCrV93 / 1.2581

3Cr2W8V

SKD5

BH21

2730

Coefficient of Thermal Expansion at °C

10m / (m*K)

20-100

11.2

20-200

11.9

20-300

12.2

20-400

12.5

20-500

12.8

20-600

13.0

20-700

13.2

Thermal Conductivity at °C

W / (m*K)

100

27.0

400

29.8

675

29.1

Soft Annealing °C

780-810

Cooling

Slowly

Hardness HB

max. 240

Hardening °C

1000-1130

Quenching

Oil or Hot Bath 600-650°C

Hardness after quenching HRC

53