Insulating varnishes: excellent insulation and optimized stampability

Electrical steel strip coatings with a myriad of peoperties

Our wide range of insulating varnishes provides the ideal coating for every electrical steel strip application. A key aspect is the insulation between individual electrical steel strip laminations. We have the perfect insulating varnish for every application – tailored to the grade of electrical steel strip, further processing requirements and final intended purpose. Stampability, corrosion protection and chemical resistance are also improved significantly. We can even adjust weldability and heat resistance according to specific requirements.

Environmentally friendly coating systems to meet any requirement

Just as with our cold rolled steel strip and electrical steel strip products – when it comes to our insulating varnishes, you can choose between one of our standard systems or one tailor made to meet your specific needs. Instead of having a strict division between organic and inorganic varnishes, our main focus of development is a combination of both substances. During research and development we always keep environmental protection at the forefront and only ever use water-soluble coating systems. Our bonding varnish is one of our specially developed variations.

Coating systems

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ASTM class	IEC class	Waelzholz- coating type	Color	Thickness per side	Continuous thermal resistance under air	Annealing resistance under inert gas	Surface resistance Ω	Chemical resistance	Weldability
				in µm	IEC 60404-12 in °C	IEC 60404-12 in °C	ASTM 717 in Ω • cm²/lam	DIN 8944	SEP 1210

C-3	EC-3	PH3	golden yellow	1 - 7	180	-	10 - 200	resistant	-
		PE75W (bonding varnish)	transparent	3 - 6	180¹⁾	-			-
		PE49 (bonding varnish)	transparent	3 - 6	180¹⁾	-			-
		PE75W-Fast (fast-bonding varnish)	transparent	3 - 6	180¹⁾	-			-
		PE49-Rapid (fast-bonding varnish)	transparent	3 - 6	180¹⁾	-			-

C-5	EC-5	AN50	transparent	0.5 - 1.5	210	600	5 - 50	resistant	+
		AN50 S	transparent	0.5 - 1.5	210	600	5 - 50	resistant	++
		AN50 V	grey	0.5 - 5	210	800	> 50	resistant	+
		AN8	grey	1 - 4	270	600	20 - 200	resistant	+

C-6	EC-6	PH2	grey	2 - 7	180	500	> 10,000	resistant	-
		PH2 FF	grey	2 - 7	180	500	> 10,000	resistant	-
		PH20	grey	1 - 3	180	500	> 10,000	resistant	-

ASTM class	IEC class	Waelzholz- coating type	Color	Thickness per side	Continuous thermal resistance under air	Annealing resistance under inert gas	Surface resistance Ω	Chemical resistance	Weldability
				in µinch	IEC 60404-12 in °F	IEC 60404-12 in °F	ASTM 717 in Ω • cm²/lam	DIN 8944	SEP 1210

C-3	EC-3	PH3	golden yellow	39.37 - 275.59	356	-	10 - 200	resistant	-
		PE75W (bonding varnish)	transparent	118.11 - 236.22	356¹⁾	-			-
		PE49 (bonding varnish)	transparent	118.11 - 236.22	356¹⁾	-			-
		PE75W-Fast (fast-bonding varnish)	transparent	118.11 - 236.22	356¹⁾	-			-
		PE49-Rapid (fast-bonding varnish)	transparent	118.11 - 236.22	356¹⁾	-			-

C-5	EC-5	AN50	transparent	19.69 - 59.06	410	1112	5 - 50	resistant	+
		AN50 S	transparent	19.69 - 59.06	410	1112	5 - 50	resistant	++
		AN50 V	grey	19.69 - 196.85	410	1472	> 50	resistant	+
		AN8	grey	39.37 - 157.48	518	1112	20 - 200	resistant	+

C-6	EC-6	PH2	grey	78.74 - 275.59	356	932	> 10,000	resistant	-
		PH2 FF	grey	78.74 - 275.59	356	932	> 10,000	resistant	-
		PH20	grey	39.37 - 118.11	356	932	> 10,000	resistant	-

Insulating varnishes: excellent insulation and optimized stampability

Electrical steel strip coatings with a myriad of peoperties

Environmentally friendly coating systems to meet any requirement

Coating systems

You have any questions concerning our steel materials or would like to send us an e-mail?

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