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DILLIDUR 325 L

DILLIDUR 325 L is successfully applied by the customers where high resistance to wear is required together with good weldability and good machinability, especially if heat treatment or hot forming is provided.

Examples: loading machines, dredgers, skip cars, conveying plants, trucks, cutting edges, knives and breakers.

Designation and range of application

The production range of the DILLIDUR 325 L plates is 5 mm (0.2 in.) to 50 mm (2 in.) according to the dimensional program. It may be possible to supply other sizes on request.

Chemical composition

Heat analysis, in %:

C	Si	Mn	P	S	Cr
≤0.23	0.30 - 0.70	1.2 - 1.7	≤0.025	≤0.010	1.0 - 1.6

Depending on the thickness, the following alloying elements are used singly or in combination to control full hardening:

Mo	Cu	Ni	V	Nb + V + Ti
≤0.5	≤0.6	≤0.6	≤0.20	≤0.20

The steel is fully killed and fine-grain treated.

Delivery condition

Normalized. According to thickness, a complementary tempering treatment may be performed.

Mechanical properties in the delivery condition 

Thickness [mm]	Hardness at room temperature [HBW]
≤15 (0.59 in.)	≥280
>15 (0.59 in.)   ≤25 (1 in.)	≥260
>25 (1 in.)   ≤50 (2 in.)	≥240

Auxiliary values for 10 mm (0.4 in.) plate thickness

Hardness	325 HBW
Tensile strength	1000 MPa (145 ksi)
Yield strength	650 MPa (95 ksi)
Elongation	13 % (l0 = 5,65√S0, transverse specimen)
Toughness	Charpy-V- longitudinal specimens (10 mm x 10 mm) 20 J (15 ft·lbf) at -20 °C (-4 °F)

Testing

Brinell surface hardness tested once per heat and 40 t.

Identification

The marking is carried out via steel stamps with at least the following information:

• the manufacturer’s symbol
• the steel designation (DILLIDUR 325 L)
• the heat number
• the rolled plate number