Fine Grain Quenched And Tempered Steel Plate Hot Rolled For Sour Gas Service
|Place of Origin:||China|
|Certification:||ISO9001:2015, ABS, BV, CCS, DNV GL, NKK|
Payment & Shipping Terms:
|Minimum Order Quantity:||5 metric tons|
|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|
|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|
heavy steel plate,
tool steel plate
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.
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.
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:
For the ladle analysis the following limiting values in % are applicable
(1) alloyed depending on dimensions
2312 MOLD STEEL is supplied in the hardened (air hardened + tempered) condition.
Mechanical and physical properties in the delivery condition
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).
The hardness (HBW) is tested on surface of each rolled mother plate.
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
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,
hardness about 230 HB
in the delivery condition max.
580 °C (1080 °F)
1 - 2 h,
|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.
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|
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.
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.