AISI 5155 Sup9 55crmna Flat Spring Steel for Truck Suspension

Product Description

Product Description

AISI 5155 SUP9 55CrMnA Flat Spring Steel for Truck Suspension


1: SUP9 steel introduction
JIS SUP9 Steel is a high quality Cold work Spring Steel, It belong to the high quality high carbon alloy Spring Steel. Oil Quenched & Tempered Hardness is 28-34 HRc. SUP9 steel Annealing delivery hardenss less than 250HB.
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2: SUP9 Steel equivalent

Country	Japan	BS	China	USA
Standard	JIS G4801	EN 10089	GB/T 1222	ASTM A29
Grade	SUP9	55Cr3	55CrMn	5155

 
3: SUP9 steel chemical composition

Grade	C	Si	Mn	P	S	Cr	V	Ni
5155	0.51-0.59	0.15-0.35	0.7-0.9	0.035	0.040	0.7-0.9	/	/
55Cr3	0.52-0.59	0.4	0.7-1.0	0.025	0.025	0.7-1.0	/	/
SUP9	0.52-0.60	0.15-0.35	0.65-0.95	0.030	0.030	0.65-0.95	/	/
55CrMn	0.52-0.60	0.17-0.37	0.65-0.95	0.025	0.020	0.65-0.95	/	0.35

 
4: SUP9 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.

5: SUP9 steel overviews

Size	Round	Dia 6-120mm
	Plate/Flat/Block	Thickness 6mm-60mm
		Width 20mm-160mm
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
Application	heavy vehicles, tractors, industrial production load, stress and the diameter of the larger plate spring and helical spring

6: Delivery condition
For hot rolled bar, usually the delivery condition is hot rolled, annealed, Black surface.
For hot rolled sheet, usually the delivery conditon 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.













Hunan Qilu Industrial CO., LTD
Web: qilusteel.en.made-in-china.com