Category:
Nickel Alloy
Alloy steel is primarily composed of iron and carbon, with additional chemical alloys mixed such as copper, manganese, nickel, etc. the added elements range from 1.0% to 50% of the complete steel alloy weight that helps in the properties of the final product, this enhances in the oxidation resistance, elasticity ductility and the strength of the steel.
Alloy Steel Classification
Generally, alloy steel is divided into the following two types.
High- Alloy steel
The elements that contain this type of alloy steel has a concentration greater than 10% of the total steel mass.
Low-alloy steel
Elements such as Silicon, Manganese, Chromium, Silicon, etc., at the ratio of 10% are added to create low-alloy steel. Such Low-Alloy Steel is widely used in the market for various reasons.
Alloy Steel Characteristics
The characteristics of Alloy steel based on the following:
Mechanical properties
Alloy Steel possess higher strength compared to carbon steel this is even more evident after quenching and tempering process.
Heat resistance
Alloy steel has high mechanical properties in hardened state with temperatures exceeding 200 degrees Celsius, to achieve such characteristic, an addition of elements with relative high concentrations is added to it.
Physical & Chemical properties
This alloy steel is corrosion resistant it also has exceptional expansibility when temperatures change.
Alloy Steel Applications
Architecture and Engineering: High-strength alloy steel is the most preferred Alloy to construct Bridges, Building Structure, and Heavy Machinery etc. Its excellent strength and longevity ensures safety and long term endurance.
Chemical & Petroleum Industry: Its high corrosion resistance are preferable within chemical and petroleum industries, It is used in pipelines, storage tanks, reactors etc.
Energy & Power Generation: In the energy sector heat tolerance and corrosion resistance play an important role, such as a necessary requirement in the manufacturing of gas turbines, boilers, and nuclear reactors.
Mining & Quarrying: Alloy steel customised for heavy usage for tolerance in wear and tear is used in equipment, such as excavators, crushers, grinders, to improve its endurance and life in service.
Electrical & Electronics: Electrical alloy steel is very much present in the manufacturing of motors and transformers, it contributes in efficient energy transmission and stable electrical performance.
Automotive & Transportation: Within the Automotive industry high strength and corrosion resistant is widely used in engine components, body structure, and transmission system.
Medical Devices & Aerospace: Due to its excellent mechanical properties and corrosion resistance features, its stays as the most preferred alloy in use to manufacture medical devices and aerospace equipment
Alloy Steel Products
- Alloy Steel Pipe
- Alloy Steel Tube
- Alloy Steel Plate
- Alloy Steel Pipe fitting
- Alloy Steel Flanges
Types of Alloy Steel
Chrome Molybdenum Alloy Steel
| Table Header | Table Header |
|---|---|
| Uses & Application | Boilers, and otherequipments, suitable for high temperature |
| Common Grades | ASTM A387 Grade 5/ 11/ 12/ 9/ 91/ 22, ASTM A204, ASTM A302, SAE 4130, AISI 4140, SAE 8620, EN 36, EN 19, EN 24, EN 10028 -2 / DIN 17175 |
| Supply Condition | Annealed / Normalized, Tempered |
Alloy Steel ASTM Standard
| Pipes | Fttg | Flg | Values | Bolts and Nuts |
|---|---|---|---|---|
| ASTM A335 Grade P1 | A234 Grade WP1 | A182 Grade F1 | A217 Grade WC1 | A193 Grade B7 A194 Grade 2H |
| ASTM A335 Grade P11 | A234 Grade WP11 | A182 Grade F11 | A217 Grade WC6 | A193 Grade B7 A194 Grade 2H |
| ASTM A335 Grade P12 | A234 Grade WP12 | A182 Grade F12 | A217 Grade WC6 | A193 Grade B7 A194 Grade 2H |
| ASTM A335 Grade P22 | A234 Grade WP22 | A182 Grade F22 | A217 Grade WC9 | A193 Grade B7 A194 Grade 2H |
| ASTM A335 Grade P5 | A234 Grade WP5 | A182 Grade F5 | A217 Grade WC5 | A193 Grade B7 A194 Grade 2H |
| ASTM A335 Grade P9 | A234 Grade WP9 | A182 Grade F9 | A217 Grade WC12 | A193 Grade B7 A194 Grade 2H |
| ASTM A335 Grade P91 | A234 Grade WP91 | A182 Grade F91 | A193 Grade B7 A194 Grade 2H | |
Specification of Alloy Steel
| Grade | Specification |
|---|---|
| AISI4130 | AMS 2301, 6370, 6348, MIL-S-6758 |
| AISI4140 | AMS 2301, 6382, 6349, MIL-S-5626 |
| 4330 | AMS 2301, 6427, MIL-S-8699, BMS-7-27 |
| AS4330 | AMS 6427, 6411, MIL-S-8699, BMS-7-27, Melt, N&T AMS 2300, BMS-7-122 |
| AS4340 | AMS 2301, 6409, 6415, MIL-S-5000, BMS 7-28, DMS-1555 |
| 52100 | AMS 2301, 6440, MIL-S-7420 |
Alloy Steel Temperature Range
- Carbon 1/2% Moly and Manganese 1/2% Moly : above 700 degree F
- 1 1/4% Chrome 1/2% Moly & 1% chrome 1/2% Moly
- 3% chrome 1% Moly & 2 1/4 Chrome 1% Moly
- 5% chrome 1/2% Moly : above 550 degree F
- 9% chrome 1% Moly
Low Alloy Steel Applications & Uses
- Aircraft
- Power Trasmission
- Structural applications
- Structural Part
Alloy Steel Composition
| AISI | UNS | C (max) | Mn (max) | P (max) | S (max) | Si | Cr | Ni | Cu | others |
|---|---|---|---|---|---|---|---|---|---|---|
| 405 | S40500 | 0.08% | 1% | 0.04% | 0.03% | 1% | 11.5-14.5% | - | - | 1-3% Aluminum |
| 430 | S43000 | 0.012% | 1% | 0.04% | 0.03% | 1% | 16-18% | - | - | - |
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