EN9 (070M55)

British Standard high-carbon structural steel bars offer higher strength and hardness, excellent wear resistance, and are suitable for wear-resistant parts under medium loads.

Classification :

Carbon Steel Bar

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PRODUCT DETAILS

British Standard high-carbon structural steel bars offer higher strength and hardness, excellent wear resistance, and are suitable for wear-resistant parts under medium loads. They can be quenched and tempered to improve hardness.

Product parameters

Material grade	Production process	Material standards	Diameter specification (mm)	Length (m)
AISI/SAE 1018	Hot rolling + cold drawing/finish drawing; annealed delivery; normalized condition can be provided	ASTM A29 / AISI 1018 / SAE J403 / GB/T 699	Φ6 ~ Φ300 (hot rolled); Φ3 ~ Φ80 (cold drawn)	3 ~ 12 meters fixed length, can be cut to length as required
AISI/SAE 1025	Hot rolled and forged; normalized delivery; can be quenched and tempered to improve strength	ASTM A29/AISI 1025/SAE J403	Φ8 ~ Φ350 (hot rolled); Φ5 ~ Φ100 (cold drawn)	3 ~ 12 meters fixed length, customizable length
AISI/SAE 1045/C45	Hot rolling/forging; normalized or quenched and tempered (Q+T) delivery; high frequency quenching surface hardening	ASTM A29 / AISI 1045 / DIN 1.0503 / GB/T 699 / EN C45	Φ10 ~ Φ400 (hot rolling and forging); Φ4 ~ Φ120 (cold drawn and fine drawn)	3 ~ 12 meters fixed length, large size can be customized according to single length
AISI/SAE 4130	Electric arc furnace smelting + refining; hot rolling/forging; annealing or normalizing + tempering delivery; can be quenched and tempered	ASTM A29/AISI 4130/ASTM A519/SAE J404	Φ12 ~ Φ300 (hot rolling and forging); Φ6 ~ Φ100 (cold drawing)	3 ~ 12 meters fixed length
AISI/SAE 4140	Electric furnace smelting + LF refining + VD vacuum degassing; hot rolling/forging; quenching and tempering (Q+T) or annealing delivery	ASTM A29 / AISI 4140 / SAE J404 / DIN 1.7225 / GB/T 3077	Φ14 ~ Φ400 (hot rolling and forging); Φ8 ~ Φ120 (cold drawing and fine drawing)	3 ~ 12 meters fixed length, can be customized as required
AISI/SAE 4340	Vacuum degassing smelting; electroslag remelting (ESR) optional; forging and blanking; quenching and tempering or annealing delivery	ASTM A29/AISI 4340/SAE J404/MIL-S-5000	Φ20 ~ Φ500 (forged); Φ16 ~ Φ200 (hot rolled)	2 ~ 12 meters, large sizes can be customized according to single size
AISI/SAE 5160	Hot rolled wire rod/straight bar; oil quenching-tempering (Q+T); lead quenching (Patenting); annealed delivery	ASTM A29/AISI 5160/ASTM A689/SAE J404	Φ5 ~ Φ100 (hot rolled straight bar); Φ0.8 ~ Φ16 (wire rod)	Straight rod 3~6 meters; wire rod delivered in rolls
AISI/SAE 8620	Electric arc furnace + refining; hot rolling/forging; annealing or normalizing delivery; carburizing and quenching heat treatment	ASTM A29/AISI 8620/SAE J404/ASTM A534	Φ10 ~ Φ250 (hot rolling and forging); Φ5 ~ Φ80 (cold drawing)	3 ~ 12 meters fixed length
EN8 (080M40)	Hot rolling/forging; normalized delivery; quenching and tempering available; cold drawn and fine drawn	BS 970 Part 1 / EN8 / 080M40 / BS EN 10083	Φ8 ~ Φ300 (hot rolling and forging); Φ4 ~ Φ100 (cold drawing)	3 ~ 12 meters fixed length
EN9 (070M55)	Hot rolled/forged; normalized or annealed delivery; can be quenched + tempered	BS 970 Part 1 / EN9 / 070M55 / BS EN 10083	Φ10 ~ Φ300 (hot rolling and forging); Φ6 ~ Φ100 (cold drawing)	3 ~ 12 meters fixed length

Material Standards

Material grade	Surface technology	Main chemical components (%)	Application scope	Equivalent material
AISI/SAE 1018	Hot rolled black leather, cold drawn bright, peeled and polished, polished, chrome plated	C:0.15~0.20, Mn:0.60~0.90, Si:≤0.10, P:≤0.040, S:≤0.050	Ordinary structural parts, bolts and nuts, pins, stamping parts, welded structural parts, agricultural machinery accessories, furniture hardware, cold heading fasteners	GB 20# / JIS S20C / DIN C15/C22 / EN 1.0402
AISI/SAE 1025	Hot rolled black leather, forged, cold drawn bright, peeled, centerless grinding	C:0.22~0.28, Mn:0.70~1.00, Si:≤0.15, P:≤0.040, S:≤0.050	Medium load structural parts, shafts, gear blanks, bolts, connecting rods, agricultural machinery parts, engineering machinery structural parts	GB 25# / JIS S25C / DIN C25 / EN 1.0406
AISI/SAE 1045/C45	Hot rolled black skin, forged, peeled, polished, polished, tempered and blackened	C:0.42~0.50, Mn:0.60~0.90, Si:0.17~0.37, P:≤0.035, S:≤0.035	Spindles, gears, racks, bolts, pins, mold pads, engineering machinery shafts, auto parts, machine tool parts, fasteners	GB 45# / JIS S45C / DIN C45 / EN 1.0503 / C45E
AISI/SAE 4130	Hot rolled black leather, forged, peeled and polished, annealed and pickled, chrome plated	C:0.28~0.33, Mn:0.40~0.60, Cr:0.80~1.10, Mo:0.15~0.25, Si:0.15~0.35	Aviation structural parts, hydraulic cylinders, piston rods, oil drilling tools, high-pressure vessels, automobile crankshafts, gears, bolts, chemical machinery	GB 30CrMo/JIS SCM430/DIN 25CrMo4/EN 1.7218
AISI/SAE 4140	Hot rolled black leather, forging, peeling, centerless grinding, tempering, blackening, chrome plating	C:0.38~0.43, Mn:0.75~1.00, Cr:0.80~1.10, Mo:0.15~0.25, Si:0.15~0.35	Transmission shafts, gears, connecting rods, bolts, hydraulic piston rods, mold inserts, wind power spindles, automobile axle shafts, high-strength structural parts of engineering machinery	GB 42CrMo/JIS SCM440/DIN 42CrMo4/EN 1.7225
AISI/SAE 4340	Forged black leather, hot rolled, peeled and polished, quenched and tempered, ultrasonic flaw detection grade	C:0.38~0.43, Mn:0.60~0.80, Ni:1.65~2.00, Cr:0.70~0.90, Mo:0.20~0.30, Si:0.15~0.35	Aerospace structural parts, high-strength bolts, crankshafts, gears, heavy machinery shafts, weapon parts, wind power gearboxes, oil drill collars	GB 40CrNiMoA / JIS SNCM439 / DIN 34CrNiMo6 / EN 1.6582
AISI/SAE 5160	Hot rolling, cold drawing, polishing, oil quenching and tempering, phosphating, saponification coating	C:0.56~0.64, Mn:0.70~0.90, Cr:0.70~0.90, Si:0.15~0.35, P:≤0.035, S:≤0.040	Automotive leaf springs, coil springs, valve springs, shock absorber springs, clutch springs, mechanical springs, mold springs	GB 60Si2CrA/JIS SUP9A/DIN 51CrV4/EN 1.8159
AISI/SAE 8620	Hot rolled black skin, forged, peeled, cold drawn bright, annealed and softened	C:0.18~0.23, Mn:0.70~0.90, Ni:0.40~0.70, Cr:0.40~0.60, Mo:0.15~0.25, Si:0.15~0.35	Automotive gears, transmission gears, shafts, camshafts, piston pins, bearing sleeves, engineering machinery transmission parts, carburized wear-resistant parts	GB 20CrNiMo/JIS SNCM220/DIN 20NiCrMo2/EN 1.6523
EN8 (080M40)	Hot rolled black leather, forged, cold drawn bright, peeled, polished, normalized	C:0.36~0.44, Mn:0.60~1.00, Si:0.05~0.35, P:≤0.050, S:≤0.050	General mechanical shafts, gears, bolts, keys, pins, machine tool parts, mold pads, ordinary structural parts, fasteners	AISI 1040/GB 40#/JIS S40C/DIN C40/EN 1.0511
EN9 (070M55)	Hot rolled black skin, forging, peeling and polishing, quenching and tempering, annealing	C:0.50~0.60, Mn:0.50~0.80, Si:0.05~0.35, P:≤0.050, S:≤0.050	Crankshaft, gear, camshaft, connecting rod, bolt, spring leaf, wear-resistant lining plate, agricultural machinery blade, tool handle, forgings	AISI 1055/GB 55#/JIS S55C/DIN C55/EN 1.0535

Warehousing

Packing and delivery

Customer Praise

All products comply with global mainstream standards: API 5L/5CT, ASTM A106/A53/A335, EN 10216, ISO 3183, JIS and GB standards. Complete MTC and third-party inspection certificates are available.

APPLICATION FIELD

Agricultural Machinery

Aerospace

Shipbuilding

Bridge

Oil pipeline

Chemical industry

Steel structure

Architecture

CUSTOMER VISIT

Customer Visit

FAQ

1.Are You Manufacture or Trade Company?

We are the professional manufacturer of steel products located in China. Welcome to contact us and visit our factory before you place orders.

2. How do you guarantee the quality?

We can send you free samples and also accept third-party testing. We also have test certificates. Every batch of goods is tested before shipment, and the test report will be sent to you by mail or online.

3. Can I get free samples?

Of course you can. We can produce according to your samples or technical drawings. Contact us by whatsapp or email to get free samples and you will get the sample after 3-7 working days.

4. What is the MOQ?

If you are scheduling to place a small quantity order or trial order, feel free to contact us, we can meet your requirements.

5.Can you OEM or ODM?

Yes, we have a strong developing team. The products can be made according to your request.

6.What about your price?

Our price is very competitive because we are a factory. Feel free to contact us if you are interested in our products.