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Hardfield 400

Hardfield 400

 BLACHY TRUDNOŚCIERALNE

Wear resistant steel is a quenched steel with additions of alloying elements and its main feature is the high hardness specially used at high mechanical abrasion works.

In this class there are materials which have Brinell hardness in the range 370-550 and they also exhibit good weldability and bendability.

Wear resistant steels are used in dump trucks, hoppers, channel coatings, ore carriers, parts of blast furnaces and industrial fans, cement plants, iron and steel industry, mines etc.

 

 

Specification

Grade

Thickness

Range (mm)

Chemical Composition (% of weight)

Ladle analysis

Hardness

(HB)

Heat Treatment

C

Mn

P

S

Cr

Ti

Nb

B

HARDFIELD

400

5.00 – 60.00

0,19 max

1,40 max

0,025max

0,010 max

0,40 max

0,050 max

0,060 max

0,005 max

370 – 430

Quenched, stress relieved

 

 

Ceq: C+Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15

(typical values)

Grade

Thickness (mm)

Ceq (%)

400

t ≤ 19,00

0,38

t > 19,00

0,44

 

Mechanical Properties

(Typical values for 20 mm plate thickness)

Yield strength

Re, MPa

Tensile strength

Rm, MPa

Elongation

A5

 

900

 

1000

 

10

 

Impact Properties

Charpy V-notch test according to ASTM-A370

Test temperature

°C

Impact energy

Charpy-V, J

 

-40

 

15

 

 

TestingBrinell hardness, HBW according to ASTM-A370, on a milled surface 1,8 mm below the surface due to the superficial decarburization inherent to the heating process before quenching.

 

 

Delivery conditionsQuenched and tempered.

 

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DimensionsHARDFIELD 400® is supplied in thickness of 6 - 50.8 mm, width of 2000 mm delivered as cut-to-length in a rolled surface condition with cut edges as standard.

 

Dimensional tolerancesThe nominal thickness will not deviate more than –0,50 / +0,90 mm.

 

Ultrasonic testingThe plates are ultrasonic tested according to ASTM A578.

 

 

Non metallic inclusionsNon metallic inclusions are tested according to ASTM-E45

 

 

Melting process Blast furnace +LD - Converter + Ladle furnace and RH – Vacuum degassing.

 

Theoretical weight 7,85 Kg/dm3