Carbon Steel EN-45 Bars

Semih Metals stands out as a top-notch manufacturer and supplier located in Istanbul, Turkey, with a focus on high-performance metal alloys like Invar 42 Bar and Rod. With years of experience in the metallurgical field, Semih Metals provides precision-engineered materials that meet the rigorous demands of industries such as aerospace, electronics, and cryogenics. The company prides itself on its commitment to quality, innovation, and customer satisfaction, offering both standard and custom specifications of Invar 42 products to clients around the globe. Thanks to cutting-edge manufacturing techniques and strict quality control measures, Semih Metals has built a solid reputation as a reliable source for high-quality Invar 42 solutions.

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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 ?

Invar 42, or UNS K94100, is an iron-nickel alloy that contains about 41–43% nickel, with the remainder being iron, along with small amounts of carbon, manganese, and silicon. It’s well-known for its remarkably low coefficient of thermal expansion. In terms of mechanical properties, Invar 42 boasts a tensile strength of roughly 450–700 MPa, a yield strength of about 275 MPa, and an elongation range of 30–45%, depending on its temper and treatment. This alloy maintains excellent dimensional stability over a wide temperature range, making it perfect for precision applications.

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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

Invar 42 Bar and Rod are extensively utilized in industries where maintaining dimensional stability and minimizing thermal expansion are crucial. You’ll find it in electronic components, telecommunications, aerospace instrumentation, precision measurement devices, and cryogenic engineering. The alloy’s stability across varying temperatures makes it ideal for lead frames, glass-to-metal seals, and shadow masks in CRTs. It’s also employed in tooling for aerospace composite fabrication and high-precision instruments like gyroscopes and laser components. Invar 42 is particularly sought after in environments where thermal fluctuations could jeopardize structural integrity or precise alignments, ensuring long-lasting reliability and accuracy.

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