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817M40
Qilu
Product Description
Hot Rolled Steel 817M40 Alloy Round Bar
1: 817M40 Steel Introduction
Alloy steel 817M40 is an alloy steel with high strength and good toughness for applications requiring high strength and durability. It has high strength, good toughness, good hardenability and resistance to overheating stability, but also has high white point sensitivity and temper brittleness, which means that under certain conditions it may be brittle or damage. Therefore, attention needs to be paid to proper treatment and service temperatures to avoid these problems. In addition, the poor weldability of 817M40 steel requires high-temperature preheating and post-weld stress relief treatment to improve the reliability and durability of welded joints.
817M40 Steel Stock in Warehouse
2: 817M40 Quality Standard
817M40 steel according to BS 970.
3: 817M40 Steel Equivalent
Country | Japan | Germany | Britain | USA |
Standard | JIS G4103 | EN10250 | BS970 | ASTM A29 |
Grade | SNCM439 | 36CrNiMo4/1.6511 | EN24/817M40 | 4340 |
4: 817M40 Steel Chemical Composition
Grade | C | Si | Mn | P | S | Cr | Mo | Ni |
4340 | 0.38-0.43 | 0.15-0.35 | 0.60-0.80 | 0.035 | 0.040 | 0.70-0.90 | 0.20-0.30 | 1.65-2.00 |
36CrNiMo4 | 0.32-0.40 | 0.40 | 0.50-0.80 | 0.035 | 0.035 | 0.90-1.20 | 0.15-0.30 | / |
817M40 | 0.36-0.44 | 0.10-0.40 | 0.45-0.70 | 0.035 | 0.040 | 1.00-1.40 | 0.20-0.35 | 1.30-1.70 |
SNCM439 | 0.36-0.43 | 0.15-0.35 | 0.60-0.90 | 0.030 | 0.030 | 0.60-1.00 | 0.15-0.30 | 1.60-2.00 |
5: 817M40 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: 817M40 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: 817M40 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: 817M40 Steel Application
High-load transmissions such as gears, shafts and bearings.
Machine parts and tools requiring high strength and toughness, such as drive shafts, chucks, etc.
Wear-resistant materials for special applications, such as cutting tools, hammer heads, etc.
14: 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.
