The mechanical properties of gray cast iron depend largely on its microstructure. Gray cast iron without inoculation treatment has unstable microstructure, low mechanical properties, and white spots are prone to appear in the thin wall of the casting. In order to ensure the consistency of casting quality, inoculation treatment is essential.

The inoculant used in the inoculation treatment of cast iron is added in a very small amount and has little effect on the chemical composition of the cast iron, but has a great impact on its microstructure. Therefore, it can improve the mechanical properties of gray cast iron and also has a significant impact on its physical properties.

Barium-based inoculants

Inoculants and inoculation methods are important means to improve the performance of cast iron. Among them, inoculants such as silicon-barium, silicon-calcium, silicon-strontium, silicon-zirconium, silicon-strontium-zirconium, and rare earth calcium-barium have a good effect on improving mechanical properties and casting properties.

Good incubation treatment has the following effects

Eliminate or reduce the tendency of mouth whitening;

Avoid overcooled tissue;

Reduce the wall thickness sensitivity of cast iron parts, so that the difference in microstructure and hardness of thin and thick sections of castings is small;

It is conducive to the nucleation of eutectic clusters and increases the number of eutectic clusters;

The form of graphite in cast iron is mainly fine and evenly distributed A-type graphite, thereby improving the mechanical properties of cast iron.

Well-incubated cast iron has better fluidity, reduced shrinkage of castings, improved processing performance, and reduced residual stress.

Barium-based inoculants mainly include silicon barium, silicon barium calcium, silicon aluminum barium calcium, etc.

Barium Silicon

Strongly increases the graphitization core, refines the graphite, promotes the acquisition of A-type graphite in gray iron castings, and improves strength. For ductile iron castings, it can make the graphite in ductile iron fine and round, and improve the spheroidization level.
It has strong anti-recession ability, and the anti-recession time is twice that of 75 silicon. The addition amount of barium silicon inoculant is less than half of that of 75 ferrosilicon inoculant, while preventing the associated spheroidization recession.

ferro silicon barium ferro silicon barium-3

chemical composition

Model	Ba	Si	Al	Mn	C	P	S
FeBa30Si35	30.0	35.0	3.0	0.40	0.30	0.04	0.04
FeBa25Si40	25.0	40.0	3.0	0.40	0.30	0.04	0.04
FeBa20Si45	20.0	45.0	3.0	0.40	0.30	0.04	0.04
FeBa15Si50	15.0	50.0	3.0	0.40	0.30	0.04	0.04
FeBa10Si55	10.0	55.0	3.0	0.40	0.20	0.04	0.04
FeBa5Si60	5.0	60.0	3.0	0.40	0.20	0.04	0.04
FeBa2Si65	2.0	65.0	3.0	0.40	0.20	0.04	0.04

Calcium Silicon Barium

Silicon-barium-calcium alloy is a new type of high-efficiency composite alloy among barium alloys. It can deoxidize, desulfurize, and also have dephosphorization effects in steelmaking; it is an inoculant and modifier in casting.

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chemical composition

Brand	Chemical Composition %
	Ca	Ba	Si	Al	Mn	C	P	S
	≥			≤
FeSi45Ca15Ba10	15.0	10.0	45.0	3.0	0.40	0.40	0.05	0.05
FeSi45Ca13Ba10	13.0	10.0	45.0	3.0	0.40	0.40	0.05	0.05
FeSi45Ca11Ba	11.0	10.0	45.0	3.0	0.40	0.40	0.05	0.05
FeSi45Ca9Ba10	9.0	10.0	45.0	3.0	0.40	0.40	0.05	0.05
FeSi45Ca7Ba15	7.0	15.0	45.0	3.0	0.40	0.40	0.05	0.05
FeSi45Ca5Ba15	5.0	15.0	45.0	3.0	0.40	0.40	0.05	0.05

Silicon Aluminum Barium Calcium

Silicon aluminum barium calcium is suitable for melting a variety of high-quality alloy steels and carbon cast steels in electric furnaces. Because this alloy can control non-metallic inclusions and carbides in steel and refine the crystalline texture, the comprehensive mechanical properties of steel or steel castings, especially normal and high temperature plasticity, and normal and low temperature toughness are significantly improved.

There is not much difference between them in appearance and color. Foundries select appropriate products and product granularity based on their specific requirements for producing castings and the size of the furnace used.

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chemical composition

Model	Ingredient content%
	Si	Ca	Ba	Al	Mn	C	P	S
	≥				≤
Al16Ba9Ca12Si30	30	12	9	16	0.4	0.4	0.04	0.02
Al16Ba9Ca12Si30	35	9	9	12	0.4	0.4	0.04	0.02
Al16Ba9Ca12Si30	40	6	12	8	0.4	0.4	0.04	0.02

How to Obtain Barium Based Inoculants Samples

If you're interested in experiencing the superior quality of our Barium Based Inoculants firsthand, obtaining samples is quick and easy.

Simply reach out to our customer service team through the following channels:

Email: Send an email to info@aonmetal.com with your sample requirements, including the desired grade of Barium Based Inoculants, quantity, and any specific application details. Our team will promptly respond and arrange for the free samples to be shipped to you.
Online Inquiry: Fill out the contact form on our website, providing your contact information and sample request details. Our customer service representatives will get in touch with you shortly to confirm your request and provide an estimated delivery time for the samples.

When you choose Henan Aon Metal and Materials Co., Limited as your Barium Based Inoculants supplier, you're choosing a partner that is committed to your success. With our top-notch products, reliable supply, and exceptional service, we are confident that we can meet and exceed your expectations. Contact us today to request your free samples and take the first step towards a successful partnership.

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