Industrial 2312 CrMnMoS Quenched And Tempered Steel Plate High Polishability

Product Details:
Place of Origin: China
Brand Name: VANFORGE
Certification: ISO9001:2015, ABS, BV, CCS, DNV GL, NKK
Payment & Shipping Terms:
Minimum Order Quantity: 5 metric tons
Price: Negotiable
Packaging Details: In bundles, standard seaworthy packing for export
Delivery Time: 15 days
Payment Terms: L/C, T/T
Supply Ability: 3000 metric tons per month

Detail Information

Material: Alloy Steel Process: Hot Rolled
Shape: Flat Plate Surface Treatment: Plain And Smooth
Length: Up To 12000mm Condition: Quenched And Tempered
Application: Molds And Tooling Feature: Excellent Polishability And Machinability
High Light:

heavy steel plate

,

tool steel plate

Product Description

2312 MOLD STEEL is a hardened CrMnMoS-alloyed tool steel for the construction of plastic molds with lower surface requirements referring to e.g. polishability and photoetchability. 2312 MOLD STEEL is characterized by excellent machinability and high dimensional stability. Moreover, it is used by the customers for accessories with holderblock requirements as e.g. ejector plates, supports, clamping plates and housings for diecasting dies.

 

Product description

Designation and range of application

2312 MOLD STEEL is a modified version of 1.2312, respectively 40CMD8+S according to NF A 35590, 40CrMnNiMo8-6-4 according to DIN EN ISO 4957 and a modified version of P20 according to ASTM A681.

 

2311 MOLD STEEL is available as plate with cut edges (sheared, flame cut or water jet cut) in the following dimensions:

Thickness ≥ 12 ≤ 130 mm ≥ 1/2 ≤ 5 inch > 130 ≤ 215 mm > 5 ≤ 8 1/2 inch
Width (1) ≥ 1000 ≤ 2500 mm ≥ 40 ≤ 98 1/4 inch ≥ 1000 ≤ 2050 mm ≥ 40 ≤ 80 1/2 inch
Length ≥ 3000 ≤ 6000 mm ≥ 119 ≤ 236 inch ≥ 3000 ≤ 6000 mm ≥ 119 ≤ 236 inch

(1) Widths < 1250 mm (49 in) have to be ordered with an even number of plates

Other dimensions available upon request.

 

Production

The 2312 MOLD STEEL production route is designed to achieve the excellent machinability and dimensional stability of this holderblock steel type. The high oxidic cleanliness and the large number of sulfides provide excellent machinability and low tool wear. On flame cut edges, a surplus of 10 mm for the machining has to be scheduled. 2312 MOLD STEEL should only be applied for molds if the surface requirements referring to e.g. polishability and photoetchability are less ambitious. 2312 MOLD STEEL should not be applied for spark erosion.

 

The above mentionned properties can only be achieved by the combination of the following 2312 MOLD STEEL-production steps:

  • chemical composition in dependence of thickness
  • vacuum degassing
  • argon stirring for high oxidic cleanliness
  • sulphur alloying
  • special casting conditions to assure the high oxidic cleanliness
  • high shape factor rolling (high thickness reduction) to realize a closely packed structure
  • appropriate heat treatment parameters according to analysis and dimensions to assure homogeneous hardness distribution over the plate and to minimize residual stresses

 

Chemical composition

For the ladle analysis the following limiting values in % are applicable

C Si Mn P S Cr Mo Ni V
0.35-0.45 0.30-0.50 1.40-1.60 ≤0.030 0.05-0.10 1.80-2.00 0.15-0.25 (1) (1)

(1) alloyed depending on dimensions

 

Delivery condition

2312 MOLD STEEL is supplied in the hardened (air hardened + tempered) condition.

 

Mechanical and physical properties in the delivery condition

Hardness

Unless otherwise agreed the hardness at the surface in the delivery condition is 280 - 325 HBW.

According to EN ISO 18265, table B2, this corresponds to a tensile strength of approximately 890 -1030 MPa (128 - 148 ksi).

 

Testing

  • Heat analysis
  • Dimension control
  • Surface inspection
  • Hardness

The hardness (HBW) is tested on surface of each rolled mother plate.

  • Ultrasonictesting

Unless otherwise agreed, 100 % ultrasonic testing is performed on each plate in accordance with EN 10160. As admissible limit applies for thickness 150 mm quality class 3 and for thickness > 150 mm quality class 2 in table 5 of EN 10228-3.

Upon request, an ultrasonic testing in accordance with ASTM A 578, Level C supplementary requirements S1 is possible. In this case the desired testing standard has to be indicated on the order.

 

Unless otherwise agreed, the results are documented in an inspection certificate 3.1 in accordance with EN 10204.

 

Identification of plates

Unless otherwise agreed the marking is carried out via steel stamps with at least the following

information:

  • steel grade (2312 MOLD STEEL)
  • heat number
  • number of mother plate and individual plate
  • the manufacturer’s symbol
  • inspector’s sign

 

Processing

Heat treatment

DIMO 2311 is delivered in the hardened condition; therefore further heat treatment is generally not necessary. This avoids the risks and costs involved by the hardening and tempering of a mold after processing. Should a heat treatment become necessary, the following data are recommended:

soft annealing stress relieving hardening tempering

720 - 740 °C (1330 - 1360 °F) 2 - 4 h,

furnace cooling

hardness about 230 HB

in the delivery condition max.

580 °C (1080 °F)

1 - 2 h,

furnace cooling

840 - 860 °C (1540 - 1580 °F)/oil; for low wall thicknesses warm bath hardening at 200 - 230 °C (390 - 450 °F) is possible in accordance with tempering diagram to required hardness

 

General technical delivery requirements

Unless otherwise agreed, the general technical delivery requirements in accordance with EN 10021 apply.

 

Tolerances

Unless otherwise agreed, tolerances are in accordance with EN 10029 with the following restrictions:

plate thickness: in accordance with EN 10029, class C
plate width: ≥1000 mm≤1500 mm -0/+40 mm ≥40≤59 in -0/+1.6 in
  >1500 mm≤2050 mm -0/+50 mm >59≤80 1/2 in -0/+2 in
  >2050 mm -0/+100 mm >80 1/2 in -0/+4 in
plate length:   ± 500 mm   ± 20 in
flatness: ≤3 mm/m, ≤6 mm/2m

 

Surface quality

Unless otherwise agreed, the specifications will be in accordance with EN 10163-2 class A, subclass 3. Shot blasting of upper and lower surface of the plate and shop priming are possible on request.

 

General note

If special requirements, which are not listed in this specification, are to be met by the steel due to its intended use or processing, these requirements are to be agreed before placing the order.

 
 
Production process
Industrial 2312 CrMnMoS Quenched And Tempered Steel Plate High Polishability 0
 
Industrial 2312 CrMnMoS Quenched And Tempered Steel Plate High Polishability 1
 
 

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