Product Description:

Tool Steel

AISI D2 Air Hardening Tool Steel

• (Machine finish) T & B with saw-cut edges
• (Machine finish) FOUR SIDES
• HOLLOW BAR

DESCRIPTION

Ideal grade for maximum Production runs. Has a machinability superior to any of the similar types of Tool Steel. Has excellent wear resistance, deep-hardening properties and high compressive strength.

ADVANTAGES

• Air-hardening—minimum change in size and shape during heat treatment. Most stable of all Tool Steels
• Deep hardening
• Very high wear-resistance

TYPICAL ANALYSIS

CARBON ……………….1.55 MOLYBDENUM ………….0.80

CHROMIUM ………….11.50 VANADIUM ………………0.90

HEAT TREATMENT

FORGING ………………………………..1900°F to 2050°F, stop at 1700°F and cool slowly

NORMALIZING ………………………...Do not normalize

ANNEALING ……………………………1650°F, furnace cool. Brinell 217 max

PREHEATING ……………………………1200°F – prior to hardening

HARDENING …………………………….1850 °F, air quench to 150°F

TEMPERING ……………………………...900° F minimum. (See Dimensional Stability and Tempering)

MACHINABLITY

Has a machinability rating of 65, as compared with a rating of 100 for a 1 percent carbon Tool Steel.

DIMENSIONAL STABILITY

Tests normally show a slight amount of contraction after hardening with the part in the as-quenched condition or tempered below 900°F. tempering at approximately 9256 usually eliminates this contraction and brings the part virtually back to its original size. Has minimum distortion in heat treatment as compared with other Tool Steels.

TEMPERING RESULTS

For the tempering test, a set of specimens 1 in. square x 2-1/2 in. long was air-quenched from 1850° F. A similar set was quenched in oil. Specimens from both sets were then tempered at 100-degree intervals from 400° and 1200°F for two hours, and tested for Rockwell hardness. Results are as follows:

	Hardness Rockwell C
Tempering Temperatures °F	1850 °F Air-quenched	1850°F Oil-quenched
None	64	64
400	60	63
500	58	52
600	58	61
700	58	61
800	57	61
900	57/60	61
1000	56	57.5
1100	48	47.5
1200	40	42

Results on 1-in. diameter specimens may be used as a guide in tempering tools to desired hardness. However, tools of heavy section or mass may be several points lower in Rockwell hardness for a given treatment.

Product description:

Step Shaft AISI D2  Tube AISI D2  Pie-shaped AISI D2   Ring AISI D2   Module Large valves of the main AISI D2   Other Profiled forgings AISI D2

Special Steel classification:

Stainless steel, Hi-Steel HSLA-80, Mould steel,  Heat resistant steel, Tool Steel, Ball bearing steel,Spring steel,  Alloy steel,  Construction steel,  Die steel, High-speed steel,  angles, channels, H steel, I-beams, welded pipes, seamless tubes,

Standard:
Our products meet Chinese GB, Japanese JIS, US ASTM, UK BS, EU DIN standards and so on.

Our advantages:

Our advantages such as advanced management and operation concepts, suitable work facilities, highly qualified talents and a number of trade partners who have long-term and close cooperation with us have ensured us to provide global customers with competitive high-quality commodities and excellent services, quickly, accurately, conveniently and completely.

Products Introduction:

Specifications

Round bar:
Diameter : 1mm-2000mm

Square bar:
Size:  50mm * 50mm-600mm *600mm

Plate steel/flat bar:
Size: Thickness:  0.1mm-800mm Width: 10mm to 1500mm

Tube/pipe:
Size: OD:  6-219mm  WT: 1-35 mm.

Cold-rolled sheet: Thickness:  2-5mm Width:1000mm Length: 2000mm

Hot-rolled sheet: Thickness:6-80mm Width: 210-610mm

Length:  We can supply any length based on the customer's requirement.

Forging/hot rolling/ extrusion of steel.

Forging: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes

Finished goods condition:  hot forging/hot rolling + annealing/normalizing + tempering/quenching + tempering/any conditions based on the customer's requirement

Surface conditions:  scaled (hot working finish)/ground/rough machining/fine machining/based on the customer's requirement

Furnaces for metallurgical processing:  electrode arc + LF/VD/VOD/ESR/Vacuum consumable electrode.

Ultrasonic inspection:  100% ultrasonic inspection for any inperfections or based on the customer's requirement

Excellent service for all kinds of industries, with advantages of technologies,  equipment and price.

We serve you with our honesty,  integrity,  and professionality.