ferro silicon barium inoculant with barium content 1-2% size 0.2-0.8mm particle appearance showing fine particle texture, dark gray color and metallic sheen with specifications below

ferro silicon barium inoculant with barium content 1-2% size 1-3mm particle appearance with ruler for size verification and chemical composition specifications table below

ferro silicon barium inoculant with barium content 1-2% size 3-8mm particle appearance with ruler for size verification and chemical composition specifications table below

Ferro silicon barium inoculant packed in 1 metric ton PP bag, showing product name FESIBA INOCULANT with customizable marking and bag size options

FeSiBa Inoculant 1-2% Ba – Barium Ferrosilicon for High-Performance Castings

Premium barium ferrosilicon with 1-2% barium content. Enhances graphite nucleation, reduces chilling tendency, and improves mechanical properties in ductile and gray iron.

Main Composition	Si 70-75%, Ba 1-2%, Al 1.0-1.5%, Ca 1.0-1.5%, Fe balance
Form	Lumps (5-50mm), Granules (3-8mm, 0.2-1mm), Custom sizes available
Application	Inoculant for ductile iron, gray iron; reduces chill depth, increases nodule count
Standard	GB/T 2272-2020, ASTM A700, ISO 544

Request a Quote Contact Sales Email your RFQ

FeSiBa Inoculant (Ba 1-2%) – Product Overview

Our FeSiBa inoculant with 1-2% barium is a specialized ferrosilicon alloy designed for the inoculation of ductile and gray cast iron. The controlled barium content provides a strong and lasting graphitizing effect, leading to improved microstructure, higher nodule counts, and reduced chill in thin sections. It is produced in submerged arc furnaces with strict raw material selection.

Product Core Advantages

Optimized Barium Level (1-2%): Delays inoculant fade, ensures consistent graphite formation throughout the casting.
High Silicon Base: Si 70-75% ensures efficient graphitization and ferrite promotion.
Custom Sizing: Available in lumps, granules, or crushed fines to match your addition method.
Consistent Quality: Tight control of Al, Ca, and other trace elements for reproducible results.
Cost-Effective: Balanced composition for superior performance without over-specification.

Typical Application Areas

Ductile Iron Castings: Automotive parts, pipe fittings, wind turbine components.
Gray Iron: Engine blocks, brake discs, machine tool beds.
Chill Reduction: Especially effective in thin-walled castings to prevent carbides.
Custom Blends: We can adjust Ba, Ca, Al according to your foundry practice.

For specific application guidance or custom formulations, contact our technical team.

Technical Specifications – Inoculant Grades (FeSiBa & FeSi)

Below is the chemical composition of our FeSiBa 1-2% (highlighted) compared with other common inoculant grades. Custom compositions are always available.

Chemical Composition (Typical Values, % by weight)

Grade / Designation	Si (%)	Ba (%)	Al (%)	Ca (%)	Fe & Others
FeSiBa 1-2% Ba	70-75	1.0-2.0	1.0-1.5	0.6-3.0(customizable)	Balance
FeSiBa 2-4% Ba	70-75	2.0-4.0	1.0-1.5	0.6-3.0	Balance
FeSiBa 4-6% Ba	65-70	4.0-6.0	1.0-1.5	1.0-3.0(customizable)	Balance
FeSi 72%	72-75	–	≤1.5	≤1.0	Balance
FeSi 74%	74-75	–	≤1.5	0.5-1.5	Balance
FeSi 75%	75-78	–	≤1.5	≤0.5-1.5	Balance

Physical Properties

Property	Value	Unit
Melting Point	1300-1350	°C
Density (at 20°C)	3.2-3.5	g/cm³
Appearance	Silvery-gray metallic lumps/granules	-

Available Sizes

Granules: 3-8mm, 0.2-1mm for in-stream inoculation
Powder / Fines: 0-0.5mm (upon request)

Application Guidelines – FeSiBa 1-2% Inoculant

Designed for late inoculation of ductile and gray iron. Typical addition rate: 0.2-0.6% of molten metal weight. Best added to the pouring stream or in the ladle.

Ductile Iron

Increases nodule count, improves ferrite percentage, reduces carbide formation in thin sections.

Gray Iron

Refines Type A graphite, reduces chill depth, enhances tensile strength.

Custom Sizing

We supply tailored granulometries for automatic dispensers or manual addition.

Packaging & Logistics – FeSiBa 1-2%

Packaging Options

1‑ton Jumbo Bags: Standard for bulk orders.
25kg / 50kg Bags: For foundries with smaller consumption.
Custom Packaging: Moisture-proof liners, big bags with pallets.

Logistics Information

Parameter	Details
Minimum Order Quantity	20 metric tons (trial orders possible)
Lead Time	15-20 days after confirmation
Port of Loading	Tianjin, Shanghai, Qingdao
Shipping Options	FOB, CIF, CFR, DAP

Download Center

FAQ – FeSiBa 1-2% Inoculant

Is it possible to entrust a third-party inspection to check the quality before shipment? +

Certainly, we support third-party inspections by internationally recognized quality inspection agencies such as SGS and BV to verify product quality before shipment. The inspection covers product appearance, weighing, dimensions, and chemical composition analysis. The entire inspection process will be documented with photos and written records, which will be provided to you together with the final inspection report. This ensures you have no concerns regarding product quality.

What is the role of barium in inoculants?+

Barium retards inoculant fade, providing a longer-lasting graphitization effect compared to plain FeSi. It also helps control chill in thin sections.

Can this grade be used for S.G. iron?+

Yes, FeSiBa 1-2% is widely used in ductile iron production to achieve high nodule counts and ferritic structures.

Do you supply custom sizes?+

Absolutely. We can crush and screen to any specification, e.g., 0.5-3mm for wire feeding.

What is the significance of the "1-2%" barium content?+

The 1-2% barium range is optimized to provide a balanced effect: it effectively reduces chill depth and improves graphite morphology without introducing excessive dross or slag formation. This specific range ensures consistent nucleation and prolonged fade resistance suitable for both thin and heavy-section castings.

How does FeSiBa compare to FeSiZr (Zirconium) inoculants?+

While Zirconium-based inoculants excel at controlling chill in thin sections and combating nitrogen-related defects, Barium-based inoculants like FeSiBa 1-2% offer superior fade resistance over time. This makes FeSiBa particularly effective for larger castings or longer pouring times where maintaining inoculation effect is critical.

What is the typical addition rate for FeSiBa 1-2%?+

The addition rate typically ranges from 0.2% to 0.6% of the melt weight, depending on the base sulfur content, section thickness, and desired microstructure. For gray iron, lower additions (0.2-0.4%) are common; for ductile iron, higher additions (0.4-0.6%) may be used to ensure high nodule count and ferrite promotion.

Does FeSiBa inoculant have a shelf life or storage requirement?+

Yes, like all ferrosilicon-based inoculants, it should be stored in a dry environment to prevent oxidation and moisture absorption. Although barium helps slow down degradation, it is recommended to use the material within 6 months of delivery and keep it in sealed bags or containers to maintain its effectiveness and consistent particle size distribution.

Can FeSiBa 1-2% help with inconsistent raw materials (e.g., steel scrap variations)?+

Absolutely. One of the key benefits of barium-containing inoculants is their ability to provide a more "forgiving" process window. They help stabilize the nucleation process even when there are minor fluctuations in the charge materials, such as tramp elements or varying scrap ratios, resulting in more consistent mechanical properties and reduced chill in castings.

What packaging options are available for FeSiBa 1-2%?+

We offer various packaging options to suit your handling needs, including 25kg multi-wall paper bags with inner liner, 1,000kg big bags, and steel drums for added protection. Custom labeling and moisture-proof packaging are available upon request for export shipments.