Products
ENi-CI
AWS:
AWS A5.15
Category:
Description
Chemical components
| C | Mn | Fe | P | S | Si | Cu | Ni | Co | Al | Ti | Cr | Nb | Ta | Mo | V | W | Other Total |
| 2.0 | 1.0 | 8.0 | — | 0.03 | 2.5 | — | 90min. | — | — | — | — | — | — | — | — | — | 1.00 |
Product Description
ENi-CI (Z308, equivalent to ENi-CI) is a premium pure nickel cast iron welding electrode compliant with GB/T 10044 and AWS A5.15 standards. Featuring a pure nickel core wire (Ni≥90-95%) with strong reducing graphite coating, it delivers excellent machinability, crack resistance, and superior plasticity. Designed for welding gray cast iron at room temperature or with slight preheating, it provides ductile weld metal with color matching similar to cast iron. Compatible with both AC and DC power sources, it supports repair welding of thin cast iron sections and machined surfaces.
Features
▪ Superior Machinability: Pure nickel composition provides weld metal with excellent machining properties, allowing post-weld processing (drilling, tapping, milling) with minimal tool wear. Ideal for applications requiring precise post-weld machining and surface finishing.
▪ Excellent Crack Resistance: High nickel content with strong reducing coating minimizes crack formation during welding. Delivers outstanding plasticity and ductility, reducing thermal stress in gray cast iron weldments, particularly for thin-wall castings.
▪ Room Temperature Welding Capability: Can be used for cold welding of gray cast iron at room temperature without preheating for thin sections (typically <10mm). For thicker sections, slight preheating to 200-300°C is recommended to further reduce cracking tendency.
▪ Stable Arc Performance: Graphite-type coating ensures stable arc, minimal spatter, smooth weld formation, and good slag detachability. Suitable for both AC and DC power sources, providing operational flexibility in various welding environments.
Applications
▪ Ideal for repair and maintenance of gray cast iron components, EZNi-1 is widely used in:
▪ Automotive Industry: Engine cylinder heads, engine blocks, manifolds, and automotive cast iron components requiring precise machining after repair.
▪ Industrial Machinery: Machine tool guideways, lathe beds, milling machine components, and precision equipment bases requiring flat, machinable surfaces after welding.
▪ General Cast Iron Repair: Thin cast iron pieces, pump housings, valve bodies, and gray cast iron fabrications not requiring high strength. Particularly effective for machined surfaces and cosmetic repairs where color matching is important.
Company Introduction
Hangzhou Lin'an Dayang Welding Materials Co., Ltd., a professional welding materials manufacturer founded in 1995, adheres to the core philosophy of "Innovative R&D, Precision Manufacturing, Meticulous Service".
With over 30 years of industry expertise, we have continuously increased investment in production upgrading and technological R&D, solidifying our reputation as a trusted supplier of industrial welding consumables globally.
Production Capacity & Product Strength
Equipped with multiple advanced automated production lines, we boast an annual output of 5,000 tons of premium welding products.
Our core portfolio covers nickel-based welding wires, stainless steel welding wires, flux-cored welding wires and high-performance specialty electrodes.
Backed by a professional R&D team with multiple patents, we also provide tailored OEM/ODM welding solutions to meet clients’ diverse application needs.
After-sales service process
FAQS
What standards does EZNi-1 comply with?
EZNi-1 complies with GB/T 10044 (Chinese national standard) and is equivalent to AWS A5.15 ENi-CI (ENi-C1) standards for cast iron welding electrodes.
What is the recommended welding current for EZNi-1 with 3.2mm diameter?
For 3.2mm diameter, recommended current is 90-120A (some sources specify 80-110A) for flat position welding, suitable for both AC and DC+ polarity. Use small current and short arc technique for optimal results.
What is the difference between EZNi-1 (Z308) and EZNiFe-1 (Z408) cast iron electrodes?
EZNi-1 (Z308) uses pure nickel core wire with excellent machinability and is ideal for gray cast iron, particularly thin sections requiring room temperature welding. EZNiFe-1 (Z408) uses nickel-iron alloy core with higher strength and better crack resistance for ductile iron, but has slightly lower machinability. Z308 is preferred for machining applications, while Z408 is better for high-strength cast iron repairs.
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