• Alloy：Alloy
• Special Use：Mold Steel
• Surface：Black,Turning
• Length：3000-6000mm or as Per Customer′s Desire
• Inspection：100% Ut Passed
• Heat Treatment：Q+T as Per Customer′s Desire
• Transport Package：Standard Seaworthy
• Specification：20-500mm diameter
• Trademark：Dongbei
• Origin：China
• Production Capacity：100 Tons,Month

Basic Info.

Alloy Alloy Special Use Mold Steel Surface Black/Turning Length 3000-6000mm or as Per Customer′s Desire Inspection 100% Ut Passed Heat Treatment Q+T as Per Customer′s Desire Transport Package Standard Seaworthy Specification 20-500mm diameter Trademark Dongbei Origin China Production Capacity 100 Tons/Month

Product Description

UNS T30407 Grade D7 Round Bar Steel Bar 

Product Introduction
The AISI grades of tool steels are the most common scale used to identify various grades of tool steel. The higher carbon grade tool steels are typically used for applications such as stamping dies, metal cutting tools, etc.
AISI D7 tool steel is a high-carbon, high-chromium air-hardening tool steel that exhibits exceptional wear resistance, with added carbon and vanadium.
The data below will provide an overview of grade D7 tool steels.

Chemical Composition

The chemical composition of D7 tool steels is outlined in the following table.

Element	Content (%)
Iron, Fe	79.3
Chromium, Cr	12.5
Vanadium, V	4
Carbon, C	2.3
Molybdenum, Mo	1.1
Silicon, Si	0.4
Manganese, Mn	0.4

 

Physical Properties

The following table shows the physical properties of D7 tool steels.

Properties	Metric	Imperial
Density	7.7-8.03 g/cm3	0.278 - 0.290 lb/in3

Mechanical Properties

The mechanical properties of D7 tool steels are displayed in the following table.

Properties	Metric	Imperial
Modulus of elasticity	190-210 GPa	27557-30458 ksi
Poisson's ratio	0.27-0.30	0.27-0.30
Hardness, Rockwell C	62.5	62.5
Izod impact unnotched	21.7 J	16 ft.lb

D7 tool steel is slowly heated at 1093 - 1149°C (2050 - 2100°F). The forgings are then cooled slowly in dry sand or in other insulating media.

Annealing

D7 tool steel is heated at 871 - 899°C (1600 -1650°F) for 2 hours and cooled to 538°C (1000°F).

Stress Relieving

To relieve machining stresses, A11 tool steels are heated to a temperature of 621 - 677°C (1150 - 1300°F) and then slowly cooled in still air.

Hardening

D7 tool steel is hardened at (1900-2000°F) and slowly cooled in air.

Tempering

Tempering of D7 tool steel is carried out at (400-1000°F) for 1 h.

Applications

The following are the list of applications of D7 tool steels:

• Brick mold liners
• Powder compaction tooling
• Shot blasting equipment liners
• Flattening rolls
• Powder compaction tooling
• Tools for ceramic extrusion and molding.

D7 tool steel is slowly heated at 1093 - 1149°C (2050 - 2100°F). The forgings are then cooled slowly in dry sand or in other insulating media.

Annealing

D7 tool steel is heated at 871 - 899°C (1600 -1650°F) for 2 hours and cooled to 538°C (1000°F).

Stress Relieving

To relieve machining stresses, A11 tool steels are heated to a temperature of 621 - 677°C (1150 - 1300°F) and then slowly cooled in still air.

Hardening

D7 tool steel is hardened at (1900-2000°F) and slowly cooled in air.

Tempering

Tempering of D7 tool steel is carried out at (400-1000°F) for 1 h.

Applications

The following are the list of applications of D7 tool steels:

• Brick mold liners
• Powder compaction tooling
• Shot blasting equipment liners
• Flattening rolls
• Powder compaction tooling
• Tools for ceramic extrusion and molding.

Available Sizes
steel round bar : dia 2mm to 1000mm
Square-shape steel: 50mm to 600mm
Steel sheet: thickness O.5mm-12mm width 1000mm max
Steel strip: thickness 0.5mm-4mmwidth 300mm max
steel plate : thickness 5mm-800mm Width:10mm to 1000mm
steel pipe: OD 8-800mm
Length: random length/fixed length

Sizes and Conditions

Our steel materials are in different sizes and conditions specially catered to our customers' needs. They come in round bars,  flat bars, plates and block.
The conditions of the materials vary from pre-hardened, hot rolled,annealed, quenched and tempered to surface conditions such as black, pre-machined,griding and polish.
Why choose us?

Quality Assurance from government owned steel mills
At Kingmetal, we meticulously source materials only from steel manufacturers to ensure consistency in providing the finest quality steel products for our customers.
Being in the competitive market today, we clearly understand that customers are looking for products that are not only best in class but also affordably priced. We are confident that we are able to ful fil these two equally vital aspects -our customers' continuous support over the past two decades is the most heartfelt recognition to us.
Speedy and Timely Delivery
Knowing that delivering goods to customers' hands on time is as important as providing quality goods, we treat every business transaction as a priority. Be it a raw material or a finished material with machining or heat treatment, every effort will be made to get your purchase order to you in the shortest lead time.
Quality Commitment
In order to realise competitive products to fulfil our customers' demands and quality considerations, our integrated quality and work management system is continuously being improved and developed further. We document this for our customers by having our quality management system certified in accordance with ISO 9001. This measure is accompanied by audits and  recertification's on a regularly prescribed basis.
Our service
We provide quality special steel for all industries.
Orders of any size, any length, ship fast
We carry a unique inventory of specialty special steel
Provide related value-adding services :
metal cutting, sizing, machining (blanking, milling, grinding), and heat treatment.
Sawing for small or large quantities, sawing-to-size.
Excellent customer service
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