A HRC 40 prehardened mould steel (300 HB/32 HRC)

W1.2311 is a 300 HB (32 HRC) prehardened grade specially designed for plastic mold industry. Chromium, Molybdenum and Manganese additions are optimized to have a fully martensite – bainite microstructure after quenching.

The steel is melted in an electrical furnace and refined with VOD or DH device. The cleanliness of the steel is guaranteed as well as the soundness. This makes the steel particularly well adapted for mold steel even when polishing or chemical etching are required for surface finish quality.

Standard
• EN: 40 CrMnMo7
• WERKSTOFF Number: 1.2311
• AISI: ≈ P20

Chemical Analysis
Typical values (weight%)

C	S max	P max	Si	Mn	Cr	Mo
.4	.005	.012	3	1.5	1.9	2

Mechanical Properties

	Hardness	YS 0.2		UTS		Elongation	Reduction of area	Elastic modulus
	HB	MPa	ksi	MPa	ksi	%	Z%	GPa	ksi
Longitudinal direction	300	854	124	1014	147	10.8	50	205	29745
Longitudinal direction	300	821	119	992	144	9.6	48	205	29745

Delivery Conditions
Dimensional program

Thickness	Width
20 – 120 mm (.79″ – 4.7″)	1500 – 2500 mm (59″ – 98.4″)
120 – 350 mm (4.7″ – 14″)	1500 – 2100 mm (49″ – 82.7″)

PDF: http://www.industeel.info/wp-content/uploads/2016/01/DS-MOLD-W12311.pdf