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4145
Qilu
Product Description
ASTM 4145 SCM445 Hot Rolled Steel Round Bar
1: AISI 4145 Steel Introduction
AISI 4145 Steel is a high quality Quenched and Tempered Alloy Structural steel, It belong to the high quality medium carbon, Oil Quenched & Tempered Hardenss is 28-34 HRc.4145 Annealing delivery hardenss less than 250HB. ASTM 4145 Alloy structural steel, we can supply the 4145 round bar, steel flat bar, plate, hexagonal steel bar and steel square block. 4145 steel Round bar can be sawn to your required lengths as one offs or multiple cut pieces. 4145 Rectangular pieces can be sawn from flat bar or plate to your specific sizes.
4145 Steel Stock In Warehouse
2: AISI 4145 Quality Standard
AISI 4145 steel according to ASTM A29-05.
3: AISI 4145 Steel Equivalent
| Country | China | Japan | Germany | USA | British |
| Standard | GB/T 3077 | JIS G4105 | DIN (W-Nr.) EN 10250 | AISI/ASTM ASTM A29 | BS 970 |
| Grade | / | SCM445 | / | 4145 | / |
4: AISI 4145 Steel Chemical Composition
| Grade | C | Si | Mn | P | S | Cr | Mo |
| 4145 | 0.46-0.54 | ≤0.40 | 0.50-0.80 | ≤ 0.025 | ≤ 0.035 | 0.90-1.20 | 0.15-0.30 |
5: AISI 4145 Steel Mechanical Properties
The mechanical properties mainly include tensile strength, yield strength, elongation, area or reduction, hardness, impact value, non-metalic inclusion etc. Different heat treatment, the mechanical properties will be different, such as normalized, tempered, QT. If you want to know the properties, kindly contact the salesman.
6: Qilu Company Profile
Hunan Qilu was engaged in steel exporting since 2008 year, the former was the sales company for Qilu Special Steel co.,ltd which was founded in 1986 year. Now Hunan Qilu Metal is one of most professional steel manufacturer and exporter in China. We already exported steel material to Germany, UK, Ireland, Greece, Italy, Poland,Belgium, Estonia, Latvia, Spain, France, Netherlands, Portugal, Czech republic, Finland, Russia, Belarus, Canada, Mexico, Brazil, Chile, Colombia, Peru, Argentina, Venezuela, Thailand, Indonesia, Vietnam, Singapore, Malaysia, Philippines, UAE, South Africa, Zambia, Australia etc.
7: Production Equipment
The company owns advanced special steel smelting facilities and forging processing equipment, the main steel-making equipment include 2 set of 50t and 25t ultra-high power electric arc furnaces, 2 set of 60t and 30t LF refining furnaces, 2 set of 60t and 30t vacuum degassing refining furnace. 4 sets of 1-20t electroslag re-melting furnaces.
The main forging equipment mainly include:3 sets of 3t 5t and 8t electro-hydraulic hammers, 3 sets of high-speed forging units of 1600t, 2000t and 4500t respectively.
8: Our Company Certificate
We already passed ISO 9000 : 2015 certificate of quality system, and we could supply steel forging material with all kinds of Classification Society Certification, such as ABS, ,DNV, BV, CCS etc. We also supplied steel material to oil industry with API certificate, such as API20B, API6A etc.
9: Stock&Warehouse
Besides forging material, we also supply hot rolled material from Dongbei special steel, Tiangong, Changcheng special steel, Lihuai Special Steel, Laisteel, Juneng steel, Yongsteel, Xinxin steel, Shijiazhuang steel etc. We have two warehouses for hot rolled material. Further processing such as heating treatment, rough machining and milled are also provided by us.
10: AISI 4145 Steel Overviews
Size | Round | Dia 6-1200mm |
Plate/Flat/Block | Thickness | |
Width | ||
Heat treatment | Normalized ; Annealed ; Quenched ; Tempered | |
Surface condition | Black; Peeled; Polished; Machined; Grinded; Turned; Milled | |
Delivery condition | Forged; Hot rolled; Cold drawn | |
Test | Tensile strength, Yield strength, elongation, area of reduction, impact value, hardness, grain size, ultrasonic test, US inspection, magnetic particle testing, etc. | |
Payment terms | T/T;L/C;/Money gram/ Paypal | |
Trade terms | FOB; CIF; C&F; etc.. | |
Delivery time | 30-45 days | |
11: AISI 4145 Steel Tolerance
Diameter(mm) | Tolerance | ||
Forged Steel Round Bar | 80-600 | Black Surface:0~+5 | Rough Machined or Turned:0~+3 |
650-1200 | Black Surface:0~+15 | Rough Machined or Turned:0~+3 | |
Hot Rolled Steel Round Bar | 16-310 | Black Surface:0~+1 | Peeled:H11 |
Cold Drawn Steel Round Bar | 6-100 | Black Surface:H11 | Peeled:H11 |
12: Packing& Delivery
For the delivery, we will choose LCL, FCL and Bulk carrier according to order quantity. Usually if the quantity is less than 10tons, we will recommend LCL. If the quantity is more than 100tons, we will recommend bulk carrier. Usually FCL will be the most common for delivery.
In order to better ensure the safety of your goods, we will provide professional, environmentally friendly, convenient and efficient packaging services. Such as pallet, wooden box, package with woven bag etc.
13: AISI 4145 Steel Heat Treatment
Softening Treatment
Holding at 740~760℃ for 4~6 hours, then cooling at 50~100℃/h to 600℃, and finally out of the air-cooled.
Normalizing
Heating at 850~870℃, and then air-cooling after discharging.
Quenching
Heating and quenching at 820~840℃, selecting suitable coolant according to the actual situation.
Tempering
Tempering process according to the mechanical properties required by the workpiece.
14: AISI 4145 Steel Application
AISI 4145 is used for engineering structural, like high tensile shafts, bolts and nuts, gears, pinions and spindles. Locomotive traction with the big gear, supercharger drive gear, pressure vessel, rear axle, gear load of connecting rod and a spring clip,4145 can also be used to under 2000 m deep well of oil drill pipe joint and the fishing tool, and can be used for bending machine mould, etc.
15: Delivery Condition
For hot forged or hot rolled bar, usually the delivery condition is hot forged or rolled, annealed or QT, black surface or rough turned.
For hot forged plate, usually the delivery condition is hot forged, annealed or QT, milled surface.
For hot rolled plate, usually the delivery condition is hot rolled, annealed or QT, black surface.
