EN8/EN9 En Series Round Steel Bar

Summit Metal Group Co., Ltd.

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EN8/EN9 En Series Round Steel Bar

EN8 is a medium carbon steel with a carbon content of 0.25% to 0.60%. It is often used to manufacture mechanical parts, bearings, gears and other parts. It has high strength and wear resistance and can obtain high hardness and strength after heat treatment.

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Product Description

EN8/EN9 En Series Round Steel Bar Description

The chemical composition of EN8 includes carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S) and other elements. The carbon content is the most important, usually between 0.36-0.44%. EN8 has good weldability, and it can be welded by conventional welding methods, such as arc welding, gas welding, etc. However, when performing high-intensity welding, care needs to be taken to control the welding heat to prevent material deterioration. EN8 carbon steel bars are widely used in the manufacturing industry, especially where high strength and wear resistance are required. They are often used to manufacture bearings, pins, mechanical parts, etc..

Product Parameters

Product Name	EN8/EN9 En Series Round Steel Bar
Standard	EN/DIN/JIS/ASTM/BS/ASME/AISI, etc.
Common Round Bar Specifications	3.0-50.8 mm, Over 50.8-300mm
Flat Steel Common Specifications	6.35x12.7mm, 6.35x25.4mm, 12.7x25.4mm
Hexagon Bar Common Specifications	AF5.8mm-17mm
Square Bar Common Specifications	AF2mm-14mm, AF6.35mm, 9.5mm, 12.7mm, 15.98mm, 19.0mm, 25.4mm
Length	1-6meters, Size Accept Custom
Diameter(mm)	Hot Rolling Round Bar	25-600	Cold Rolling Square Bar	6-50.8
	Hot Rolling Square Bar	21-54	Cold Rolling Hexagon Bar	9.5-65
	Cold Rolling Round bar	6-101.6	Forged Rebar	200-1000
Surface Process	Bright, Polished, Black
Other Services	Machining(cnc), Centerless Grinding(cg), Heat Treatment, Annealing, Pickling, Polishing, Rolling, Forging, Cutting, Bending, Small Machining, etc.

Chemical Composition

Grade	C %	Si %	Mn %	Cr %	Mo %	W %
EN-1A	0.007-0.15	0.10	0.80-1.00	S	P	-
				0.20-0.30	0.70 MAX
EN-8	0.35-0.45	0.05-0.30	0.60-1.00	S	P	-
				0.06 MAX	0.06 MAX
EN-9	0.50-0.60	0.05-0.30	0.5-0.80	-	-	-
EN-19 (V 320)	0.35-0.45	0.10-0.30	0.5-0.80	0.90-1.40	0.20-0.40
EN-24 (V 130)	0.35-0.45	0.10-0.35	0.45-0.70	0.90-1.40	0.20-0.35	NI
						1.3-1.8
EN-31 R-100	0.90-1.20	0.10-0.35	0.30-0.75	1.00-1.60	-	-
EN-36C E-200	0.12-0.18	0.10-0.35	0.30-0.60	0.60-1.10	-	NI
						3.0-3.75
EN-42	0.70-0.85	0.10-0.40	0.55-0.75	-	-	-
EN-44	0.90-1.20	0.30	0.45-0.70	-	-	-
EN-45 F-110	50-0.60	1.5-2.0	0.70-1.00	-	-	-
EN-351	0.10-0.20	0.35	0.60-1.00	0.40-0.80	0.08-0.10	NI
						0.60-1.00
EN-353	0.10-0.20	0.35	0.50-1.00	0.75-1.25	0.08-o.15	NI
						1.00-1.50

Mechanical Properties

Grade	Hardening Temperature	Quenching Medium	Tempering Temperature	Brinell Hardness	JapanHe	AISI
EN-1A	-	-	-	-	-	-
EN-8	750-900	OIL	150-200		-	1040
EN-9	850-900	OIL	200-250	55-60	-	-
EN-19 (V 320)	900-950	OIL	200-225	45-55	SCM 4	4140
EN-24 (V 130)	830-860	OIL	540-680	45-55	SNCM 8	4340
EN-31 R-100	820-860	OIL	180-225	59-65	-	-
EN-36C E-200	780-860	OIL	170-210	61-63	SNC 22	3415
EN-42	600-700	DIRECT HARDENING		40-45	-	-
EN-44	650-750	OIL	150	45-50	-	-
EN-45	830-860	OIL	470-520	50-55	-	9255
EN-351	850-860	OIL	175-200	62-64	-	-
EN-353	840-870	OIL	150-200	62-64	-	-

Scope of Application

The EN series is widely used in many general engineering applications. Typical applications include shafts, studs, bolts, connecting rods, screws, etc.

Product Application

Packaging and shipping

Factory Display

FAQ

1. What are your main products?
We primarily deal in carbon steel (hot-rolled/cold-rolled sheets, coils, pipes, and bars), structural steel (angle bars, channel steel, I-beams, H-beams, square/rectangular tubes, etc.), galvanized products (galvanized sheets, coils, pipes, and profiles), and aluminum products (sheets, coils, profiles, and bars). We can also supply other steel varieties based on customer requirements.

2. Are you a manufacturer or a trader?
We are a comprehensive service provider integrating trading, processing, and distribution. We maintain close partnerships with major steel mills in Vietnam and the surrounding region, ensuring a stable supply chain. Additionally, our in-house processing center offers value-added services, combining the flexibility of a trader with the service capabilities of a processing plant.

3. Do you accept small-batch orders? What is the minimum order quantity (MOQ)?
Yes, we support small-batch and trial orders. The MOQ is typically one container (approx. 20–25 tons), depending on product specifications and dimensions. MOQs for aluminum products can be lower; please contact us for details.

4. What is the typical delivery time?
For standard products, delivery takes 15–30 days after receipt of the deposit, depending on order volume, product type, and current production scheduling. Stock items can be delivered sooner. Delivery times for customized orders will be longer, and we will inform you in advance.

5. What payment methods do you accept?
We generally accept T/T (Telegraphic Transfer) and L/C (Letter of Credit). More flexible payment terms can be negotiated for long-term clients. Specific ratios (e.g., 30% down payment and 70% balance) can be adjusted based on the order value and credit status.

6. What processing services do you offer?
We provide services such as cutting, punching, bending, welding, uncoiling, and leveling. We also offer customized deep processing of profiles based on technical drawings. All processing is performed in-house to ensure quality control and timely delivery.

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