414 / 416 , Ground Floor, Maulana Azad Road,

Grant Road (East), Mumbai 400 004



Supreme Steel industries is a leading D2 Importers,D2 Importers in India, D2 Importers in mumbai,Company located in Mumbai,India.

Description:


AISI D2 is a high-carbon, high-chromium tool steel alloyed with molybdenum and vanadium characterized by:

* High wear resistance

* High compressive strength

* Good through-hardening properties

* High stability in hardening

* Good resistance to tempering-back.

Designations
China USA Japan Germany
GB Cr12Mo1V1 AISI D2 JIS SKD11 W.Nr. 1.2379
X155CrVMo 12- 1
X153CrMoV 12


Chemical composition ( in weight % )
Grade C Si Mn Cr Mo V
D2 1.55 0.30 0.40 11.80 0.80 0.80


Applications:


AISI D2 is recommended for tools requiring very high wear resistance, combined with moderate toughness (shock-resistance).

Deep drawing and forming dies, cold drawing punches, hobbing, blanking, lamination and stamping dies, shear blades, burnishing rolls, master tools and gauges, slitting cutters, thread rolling & wire dies, extrusion dies etc

Heat treatment:


Soft annealing

Protect the steel and heat through to 1560°F (850°c).

Then cool in the furnace at 20°F (10°c) per hour to 1200°F (650°c), then freely in air.

Stress Relieving:

After rough machining the tool should be heated through to 1200°F (650°c), holding time 2 hours.

Cool slowly to 930°F (500°c), then freely in air

Hardening

Preheating temperature: 1110–1290°F (650–750°c).

Austenitizing temperature: 1810–1920°F (990–1050°c) but usually 1830–1905°F (1000–1040°c).

Temperature Soaking time minutes Hardeness before tempering
°F °C
1815 990 60 approx. 63 HRC
1850 1010 45 approx. 64 HRC
1885 1030 30 approx. 65 HRC

Quenching Media:


* Oil (Only very simple geometries)
* Vacuum (high speed gas)
* Forced air/gas
* Martempering bath or fluidized bed at 360–930°F (180–500°c), then cooling in air.

Note: Temper the tool as soon as its temperature reaches 120–160°F (50–70°c).

AISI D2 hardens through in all standard sizes.

Tempering:


Choose the tempering temperature according to the hardness required by reference to the tempering graph.

Temper twice with intermediate cooling to room temperature. Lowest tempering temperature 360°F (180°c).

Holding time at temperature minimum 2 hours.

High temperature tempering at greater than 950°F (510°c) is recommended if dimensional stability of tooling is critical,

if significant wire EDM operations are planned in the hardened state, or if tools are to be coated.