Name: EN8/EN9 En Series Round Steel Bar
SKU: 0

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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

Chemical Industry

steel is used to construct facilities such as large storage tanks, refining equipment, and chemical pipelines.

Natural Gas Industry

Steel is also widely used in the energy industry, such as oil and gas pipelines.

Oil Pipeline

In the oil and gas industry, carbon steel is used to manufacture various equipment and pipelines.

Ship

In shipbuilding, steel is used to manufacture key components such as ship structures and engine parts.

Stadium

Steel plays an important role in steel structure buildings such as high-rise buildings, large-span buildings, and sports venues.

Water Treatment

The application of steel in water treatment is mainly reflected in the construction of water treatment equipment and the production of components such as pipelines.

Packaging and shipping

Factory Display

FAQ

Q1: What metal materials do you supply?

Jiangsu Zhongersheng is a professional manufacturer mainly supplying carbon steel, hot-dip galvanized steel, PPGI color coated steel, 201/304/316 stainless steel sheets, coils, tubes and profiles, as well as various steel structural parts. Our products serve infrastructure, photovoltaic, machinery manufacturing, chemical and new energy industries.

Q2: Can you customize material grades, thickness and sizes?

Full customization is available. For carbon steel, galvanized steel and stainless steel, thickness, width and length can be adjusted in accordance with ASTM & EN standards. Profiles can be cut and processed as per drawings, and special steel materials can be customized via production line scheduling.

Q3: What’s the difference between galvanized steel and color coated PPGI?

Hot-dip galvanized steel features pure zinc anti-rust coating with cost-effective and wear-resistant performance, suitable for steel brackets, guardrails and load-bearing structures, and supports secondary painting. PPGI takes galvanized sheet as base material with colorful coating for anti-rust & decorative purposes, widely used for factory roof/wall panels and energy storage housings. Thick galvanized steel is recommended for rainy coastal areas, while PPGI is ideal for decorative outdoor projects.

Q4: Do you have spot inventory? What’s your MOQ?

We built a 10,000-ton standardized warehouse with abundant spot stock of carbon steel, galvanized steel and stainless steel. MOQ is 1 ton for standard sizes; small samples of dozens of kilograms are acceptable. No upper limit for bulk engineering orders, mixed container loading of multiple steel types is supported.

Q5: How long is the delivery time for spot goods & customized goods?

Spot goods can be loaded within 3-7 days; simple cutting & bending processing orders take 7-10 days; mould opening & special steel customization takes 15-30 days, subject to specific specifications confirmation.