PRODUCT CATEGORY

HOT PRODUCTS

loading

AISI 420/DIN 1.2083 Forged Blocks

DIN 1.2083/AISI 420 Forged Blocks are widely used for making plastic molds and transparent plastic molds which require high load, wear resistance, and work under the action of corroding medium.
Availability:

PDF Export

facebook sharing button
twitter sharing button
whatsapp sharing button
wechat sharing button
sharethis sharing button
  • AISI 420/DIN 1.2083 Forged Blocks

DIN 1.2083 / AISI 420 Steel Forged Blocks for Plastic Mold Making

Equivalence

AISI/SAE

DIN / W.Nr

JIS

GB

420

1.2083

SUS 420J2

4Cr13


Chemical Composition (%)

Steel Grade

C

Si

Mn

P

S

Cr

1.2083

0.36
0.42


1.00


1.00


0.030


0.030

12.50
14.50

420


0.15


1.00


1.00


0.030


0.030

12.00
14.00

4Cr13

0.36
0.45


0.60


0.80


0.030


0.030

12.00
14.00


Dimensions

Thickness (mm)

Width (mm)

Length (mm)

150-600

200-1500

2000-5800


Delivery Condition

EAF+LF+VD+(ESR), Forged, Unmachined or Machined surface, UT 100% Passed


We offer two conditions as

Annealed: Hardness ≤ 235HB
Q+T: Hardness 33-38 HRC or as customized


Characteristics

Martensite stainless steel, with good machinability and excellent corrosion resistance, polishability, and high strength and wear resistance after heat treatment.


Application

It is widely used for making plastic molds and transparent plastic molds which require high load, wear resistance, and work under the action of corroding medium.


Forging Technique

Heat
Temperature

Start Forging
Temperature

Finish Forging
Temperature

Cooling Method

Slowly heat to 800°C,
then quickly heat to finaL forging temperature

1160– 1200°C

>=850°C

Ash coolinor sand cooling, with timely annealing


Heat Treatment

1. Annealing
840 to 870°C

Slow controlled cooling in the furnace at a rate of 10 to 20°C/hr down to approx. 600°C, further cooling in air.Hardness after annealing: max. 229 HB.


2. Stress relieving
Approx. 650°C

Slow cooling in the furnace; intended to relieve stresses set up by extensive machining, or in complex shapes. After through heating, hold in neutral atmosphere for 1 – 2 hours.


3. Hardening
1000 to 1050°C / Oil, air
Holding time after temperature equalization: 15 to 30 minutes.

Obtainable hardness: 53-56 HRC


4. Tempering
100 to 200°C (212 to 392°F)
Slow heating to tempering temperature immediately after hardening / time in furnace
1 hour for each 20 mm of work piece thickness but at least 2 hours / cooling in air.
For average hardness figures to be obtained please refer to the tempering chart.


Previous: 
Next: 

GET A FREE QUOTE

  • Building #32, No.288 XinzhuanRoad, Shanghai, China
  • E-email us:
    inquiry-carbon@ninesteel-cs.com
  • call us on:
    +86-21-67890007