Hot Forged Rolled Alloy Steel Round Bars En30b 835m30 30nicrmo16-6 1.6747

Product Description

Hot Forged Rolled Alloy Steel Round Bars En30b 835m30 30nicrmo16-6 1.6747

1: EN30B steel introduction
    EN30B is a 4% nickel air/oil hardening steel. It achieves a good through hardness with high strength and toughness. It is capable of taking a good polish and is widely used as drill bit material
 
2: EN30B Steel equivalent

Country	Germany	British
Standard	EN10250	BS970
Grade	30NiCrMo16-6/1.6747	EN30B/835M30

 
3: EN30B steel chemical composition

Grade	C	Si	Mn	P	S	Cr	Mo	Ni
1.6747	0.26-0.33	0.4	0.5-0.8	0.025	0.025	1.2-1.5	0.3-0.6	3.3-4.3
EN30B	0.28-0.33	0.1-0.35	0.4-0.6	0.025	0.015	1.1-1.24	0.2-0.4	4-4.3

 
4: EN30B 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: EN30B steel overviews

Size	Round	Dia 6-1000mm
	Plate/Flat/Block	Thickness 6mm-500mm
		Width 20mm-1000mm
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	EN30B alloy steels are used for Down-hole tools, heavy duty construction tools, rock drilling bit bodies, highly stressed gears and transmission components, heavy duty shafts and rolls.

 

6:Heat Treatment 

Forging - Commence 1200ºC (2190ºF) Max.
Double Annealing - Austenitize 850ºC to 865ºC (1560ºF to 1590ºF)Quench and tempered
Machinability: Double Anneal at 635ºC to 650ºC (1175ºF to 1200ºF)Do not exceed 660ºC (1220ºF)
    A Hardness of 269 HB Max is achievable
Normalize, Temper & Stress Relieve - Austenitize 850ºC to 865ºC (1560ºF to 1590ºF).Air cool to room temperature
    Temper 530ºC (990ºF), air cool
    Stress Relieve 500ºC (930ºF), air cool
Hardened & Tempered Austenitize 850ºC to 865ºC (1560ºF to 1590ºF) Forced air cool or oil quench. Temper at 200ºC (400ºF), air cool.

 

7: Delivery condition
    For hot forged rolled bar, usually the delivery condition is hot forged or rolled, annealed/QT, rough turned/Black surface.
    For hot forged or hot rolled bar, usually the delivery condition is hot rolled, annealed/QT, Black surface.
    For hot forged plate, usually the delivery condition is hot forged, annealed/QT, milled surface/Black surface
    For hot rolled plate, usually the delivery condition is hot rolled, annealed/QT, 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