Carbon Steel EN-45 Bars

Sahil Metals, based in Riyadh, Saudi Arabia, is a reputable manufacturer and supplier of specialized carbon steel materials tailored for high-performance engineering needs. One of their standout products is the **Carbon Steel EN‑45 Bars**, a high-carbon, silicon-manganese spring steel celebrated for its exceptional toughness, fatigue resistance, and flexibility. These bars are produced to stringent standards—including annealed, hardened, and tempered conditions—and are distributed throughout Saudi Arabia and the wider GCC region for applications that demand strength, precision, and reliability. ([Vision Metalloys][1])

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Carbon Steel EN-45 Round Bars

Carbon Steel EN-45 Hex Bars

Carbon Steel EN-45 Series Rods

What is Carbon Steel EN-45 Series Bars ?

The **Carbon Steel EN‑45 Bars** boast a chemical composition that typically includes **0.50–0.60% carbon**, **0.70–1.00% manganese**, and **1.50–2.00% silicon**, along with trace amounts of chromium (up to ~0.25%) and a maximum of 0.05% for both phosphorus and sulfur ([Vision Metalloys][1], [Spring Steel Stock][2], [ASC Forgings][3]). When annealed, these bars achieve a hardness of about **200–250 HB**; after undergoing proper hardening and tempering, they can reach hardness levels of up to **600 HV** (approximately **45–52 HRC**), with tensile strength varying between **850–1100 N/mm²** ([Vision Metalloys][1], [ASC Forgings][3]).

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Carbon Steel EN-45 Bars Specifications

Grade	EN45
Specification	BS970 1.0904 55Si7 55S6 55Si2Mn ASTM 9255
Round bar size	Diameter: 3-~800mm
Hex Bar size	2-100mm A/F
Flat bar size	Thickness: 2 -100mm
Flat bar size	Width: 10 to 500mm
Square bar size	4 to 100mm
Angle bar size	3mm20mm20mm~12mm100mm100mm
Section	3.0 to 12.0mm thickness
Channel Bar	80 x 40mm to 150 x 75mm section; 5.0 to 6.0mm thickness
Hollow Bar	32mm OD x 16mm ID to 250mm OD x 200mm ID)
Billet Size	1/2″ to 495mm Diameter
Rectangles Size	33 x 30mm to 295 x 1066mm
Finish	Cold (bright) drawn, centreless ground,smooth turned, peeled, slit rolled edge, hot rolled, hot rolled annealed, Rough Turned, Bright, Polish, Grinding, Centreless Ground & Black
Tolerance	H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements
Surface	Bright, Hot Rolled Pickled, Cold Drawn, Sand Blasting Finished, Polished, Hairline
Condition	Hardened & tempered, annealed
Technique	EN45 Hot Rolled, Cold Drawn, Cold Rolled, Forged Round Bar, Rod
Processing	Bar cutting to 650mm
Form	EN45 Welding Rod, Round, Rod, T-Bar, Channel Bar, Precision Ground Bar, Flat Bar, Square, Blocks, Round Rod, Rings, Hollow, Triangle, Rectangle, Hex (A/F), Threaded, Half Round Bar, Profiles, Billet, Ingot, I/H Bar, Forging etc.
Our EN45 round bar conforms to NACE MR0175/ISO 15156

Chemical Compositions of Carbon Steel EN-45 Bars

Element	En42J
C	0.75 – 0.90%
Mn	0.50 – 0.90%
Si	0/1 – 0.35
S	0.04% Max
P	0.04% Max

Mechanical Properties of Carbon Steel EN-45 Bars

ULTIMATE TENSILE STRENGTH, S. (MPA)	621
Modulus of elasticity, E (Gpa)	204
Fatigue strength coefficient, of (Mpa)	948
Fatigue strength exponent, b	-0.092
Fatigue ductility coeffient ,ef	0.26
Fatigue ductility exponent,c	-0.445

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Carbon Steel EN-45 Bars Types

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size chart Carbon Steel EN-45 Bars

Type	SIZES (mm)	SIZES (Inches)	ISO Tolerance
Cold Drawn and Polish	3.00 – 75.00	1/8″ – 3.00″	h8-h9-h10-h11
Cold Drawn and Ground	10.00 – 75.00	5/6″ – 2.50″	h8-h9-h10-h11
Peeled and Polished	40.00 – 150.00	1.50″ – 6.00″	h11, h11-DIN 1013
Peeled and Ground	20.00 – 50.00	3/4″ – 2.00″	h9-h10-h11

Frequently Asked Questions (FAQ)

What are the main uses of Carbon Steel EN-45 Bars and Rods?

EN-45 Bars and Rods are primarily used in automotive components like springs, shafts, and crankshafts, as well as in engineering tools and machinery parts requiring high strength and wear resistance.

What are the mechanical properties of EN-45 Bars and Rods?

EN-45 Bars and Rods offer excellent tensile strength (700-900 MPa), yield strength (450-600 MPa), and toughness, making them ideal for high-stress applications.

Can Carbon Steel EN-45 Bars and Rods be customized?

Yes, we offer customized Carbon Steel EN-45 Bars and Rods in various sizes and specifications to meet specific application needs.

Carbon Steel EN-45 Bars Uses

**EN‑45 Bars** are widely used in high-stress, fatigue-critical components such as automotive leaf and coil springs, saw blades, knives, historical swords, railway parts, and shock-resistant machine tools ([Vision Metalloys][1], [Spring Steel Stock][2]). Their remarkable resilience and capacity to be heat-treated for both surface hardness and core toughness make them perfect for dynamic load applications where durable and flexible material performance is crucial.

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