Hot Forged Rolled Round Bars SAE ASTM AISI 4145 4330 4815 Alloy Steel
HUNAN QILU INDUSTRIAL CO., LTD.- Type：Special Steel Bar
- Standard：AISI, ASTM, DIN, JIS, GB, BS
- Composition：Alloy Steel
- Technique：Forged
- Shape：Round,Flat,Block,Square,Bar,Plate
- Surface Treatment：Black Surface,Turned,Rough Machined,Peeled
Base Info
- Model NO.：Round Bars SAE ASTM AISI 4145 4330 4815
- Special Use：Wear Resistant Steel, Free Cutting Steel, Mold Steel, Engineering Steel
- Application：Structural Steel Bar
- Heat Treatment：Annealed,Normalized,Q+T
- Payment Term：30% Tt Deposit, Balance Against Bl Copy
- Length：3-5.8m, or as Per Request
- Ex-Stock：Yes
- Ut Standard：Sep 1921-84 D,D
- Grain Size：ASTM E112
- Non-Metallic Inclusiton：ASTM E45
- Delivery Condition：Forged,Hot Rolled,Cold Drawn
- Certificate：ISO, ABS, BV, CCS, Dnv, Lr, Gl, Mill Certificate
- Quality Inspection：Ut, Chemical Composition, Physical Properties,SGS
- Experience：15years
- Other Type 1：Engineering Steel, Cold Work Tool Steel
- Other Type 2：Hot Work Tool Steel, Plastic Mold Steel
- Other Type 3：Spring Steel, High Speed Steel, Stainless Steel
- Other Type 4：Mold Steel, Free Cutting Steel, Cold Heading Steel
- Transport Package：in Loose 20′ Container or 40′ Container
- Specification：DIA 6-1200
- Trademark：QILU
- Origin：China
- HS Code：722840
- Production Capacity：50000metric Tons,Year
Description
6: Heat Treatment
Tempering
AISI 4330 alloy steel is tempered based on the desired state level. This alloy steel is tempered at 454 to 635°C (850 to 1175°F) for the lower strength 125 to 200 ksi level. AISI 4330 alloy steel is tempered at 218 to 260°C (425 to 500°F) for the 260 to 280 ksi level. Tempering is not recommended for strength levels in the 220 to 260 ksi range as this will lead to degradation of impact strength.
Annealing
AISI 4330 alloy steel can be completely annealed at 816 to 899°C (1500 to 1650°F). The alloy is then cooled slowly in the furnace and finally cooled in air.
Cold Working
AISI 4330 alloy steel has good cold working characteristics. Conventional methods are used for cold working this alloy steel.
Welding
Conventional methods are used for welding AISI 4330 alloy steel. AISI 4330 alloy steel is preheated and post heated based on the welding procedure used for this alloy steel type, and the alloy can be joined by a brazing process.
Forging
AISI 4330 alloy steel is forged in the temperature range of 1204 to 982°C (2200 to 1800°F).
Forming
AISI 4330 alloy steel has good formability characteristics and the bend radii for this alloy should not be sharper that a 3t bend.
Machinability
AISI 4330 alloy steel has good machinability features in the annealed, tempered and normalized conditions. This alloy steel is difficult to be machined in the hardened condition.
Heat Treatment
AISI 4330 alloy steel is heated to 829°C (1525°F) and then quenched in oil. AISI 4330 alloy steel can also be heat treated to strength levels of 200 ksi or greater than 200 ksi, by first being normalized at 899°C (1650°F) before the heat treatment and then quenched to gain strength.
Hot Working
AISI 4330 alloy steel is generally not hot worked as it already has good cold forming features.
Hardening
AISI 4330 alloy steel can be hardened by being tempered and heat treated.
7: Delivery condition
For hot forged or hot rolled bar, usually the delivery condition is hot forged or rolled, annealed, rough turned.For hot forged plate, usually the delivery condition is hot forged, annealed, milled surface.
For hot rolled plate, usually the delivery condition is hot rolled, annealed, black surface.
Hunan Qilu Industrial Co., Ltd has the capacity to forge round steel, steel flat, square steel, module, shaft and roller, etc. The main specifications of the products include Φ80-1000mm forging materials and 80-1200mm square billets and which the maximum piece weight can reach 50T.
Hunan Qilu Industrial Co., Ltd were already engaged in exporting steel for 11 years, could supply a great variety of hot forged, hot rolled and cold drawn Steels, including engineering steel, cold work tool steel, hot work tool steel, plastic mold steel, spring steel, high speed steel, stainless steel etc., besides Qilu Industrial also has their own heating treatment shop and machining shop to provide heating and cutting service.
Since 2008 year, Hunan Qilu Industrial has the right to export all FORGED STEEL behalf of Qilu Speical Steel Co.,ltd which is specialized in smelting and forging of special steel since 1965 year, now Qilu special steel is one of the biggest manufacturer of forged product in China.The forged products are used in Automotive, Aerospace, Power Generation, Oil & Gas, Transportation and Industrial. We already set up the warehouse in Wuxi and Dongguan city, more than 20000 tons ex-stock could be supplied with kinds of size.
Qilu Industrial is the professional one-stop steel manufacturer, stockist and exporter in China, our customers spread all over the world, include West Europe, North America, South America, Asia, Middle Asia, Africa, Australia, etc.
The company owns advanced special steel smelting facilities and forging processing equipments, the main steel-making equipment include 2 sets of 50t ultra-high power electric arc furnaces,2 sets of 60t LF refining furnaces,1 set of 60t vacuum degassing refining furnace and 4 sets of 1-20t electroslag re-melting furnaces.
The main forging equipments mainly include:3 sets of 5t electro-hydraulic hammers, 1 set of high-speed forging units of 800t,1600t,2000t and 4500t respectively.
Any interests in our company and products, please feel free to contact us for quotation. We warmly welcome you to our factory.Hunan Qilu Industrial CO., LTD
Web: qilusteel.en.made-in-china.com