ALTA Cr12MoV / X12МФ

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ALTA Cr12MoV / X12МФ

Standards

DIN

AISI

JIS

ГОСТ

Cr12MoV

~ 1.2379

~ D2

~ SKD11

Х12МФ

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Steel properties : 

ALTA Cr12MoV is a high carbon-chromium tool steel (Cr12% version, ledeburite organization). This is also a very commonly used cold work tool steel in China, Southeast Asia, Russia, Ukraine, Belraus, India etc markets. It comes with higher wear resistance, toughness and strength than D3, 1.2080. ALTA Cr12MoV steel can basically replace D3, 1.2080 steel in all usage scenarios, acted as a economic type grade of D2, 1.2379.

 

Features :

  • High wear resistance
  • High hardenability (workpieces with cross-sections below 300 - 400mm can be fully hardened)
  • Good dimensional stability
  • Good compressive strength

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Applications :

It is used to manufacture various tools and molds with large cross-sections, complex shapes, and withstand large impact loads, also for making cutting tools, blades, mill working rolls etc.

 

  • Used for making complex shapes of punching dies with material thickness >3mm, such as convex dies, concave dies and inserts. The recommended hardness is 58~62HRC for convex dies and 60~64HRC for concave dies.
  • Used for making high wear-resistant convex and concave dies in blanking molds. Recommended hardness is guanidine 60~62HRC for convex dies and 62~64HRC for concave dies.
  • Used for making deep-drawing die which requires high tensile strength, the recommended hardness is 62~64HRC.
  • Used for making convex and concave molds and inserts of complex shapes in bending molds which require wear resistance. Recommended hardness is 60~64HRC for convex molds and 60~64HRC for concave molds.
  • Used for making convex and concave dies for cold extrusion of aluminum parts. Suggested hardness is 60~62HRC for making convex die and 62-64HRC for making concave die.

 

 

Chemical Composition per %

 

C

Si

Mn

P

S

Cr

Mo

V

Min.

1.45

0.10

0.15

 

 

11.0

0.40

0.15

Max.

1.70

0.40

0.40

0.030

0.030

12.5

0.60

0.30

 

 

Ni

Cu

 

 

 

 

 

 

Min.

 

 

 

 

 

 

 

 

Max.

0.25

0.30

 

 

 

 

 

 
  1. Recommended smelting processing : IM/EAF + LF + VD + (ESR)

Hardness :

Max 250 HB (annealed)

Reduction ratio :

5 : 1 minimum or required

Grain size :

≥ 6.0 per ASTM E112

Non-metallic inclusion :

≤ 1.0 (thick), ≤ 1.5 (thin) per ASTM E45 method A (more pure by ESR route)

Mechanical property

N.a.

Ultrasonic Test

SEP1921, EN 10308, ASTM A388 or agreed methods

Macro-structure

As per ASTM E381

Straightness / flatness

≤ 1.5 mm / m (machined), ≤ 2.5 mm / m (black)

Tolerance

Per discussed

Size range (round bars)

Ø 60 - 500 mm (2 2/5 inch – 19 1/2 inch)

Size range (flats, plates)

20 - 400 mm in thickness (4/5 inch – 15 4/5 inch)

max. 910 mm in width (35 4/5 inch)

                                                                                       

Rolled bars are also available per request. Minimum diameter Ø 12 mm (1/2 inch) and thickness

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