FLAT WASHERS

Standard reference	Material	Hardness range
DIN 6340	carbon steel	HV 350÷430
ISO 7089	steel	HV 200÷300
ISO 7089	carbon steel	HV 300÷370
ISO 7089	stainless steel	HV 140÷300
ISO 7089	brass
ISO 7091	steel	HV 100÷200
ISO 7092	steel	HV 200÷300
ISO 7092	carbon steel	HV 300÷370
ISO 7092	stainless steel	HV 140÷300
ISO 7092	brass
ISO 7093-1	steel	HV 200÷300
ISO 7093-1	carbon steel	HV 300÷370
ISO 7093-1	stainless steel	HV 140÷300
ISO 7094	steel	HV 100÷200
UNI 6592*	steel	HV 100÷200
DIN 125-1A*	steel	HV 100÷200
UNI 6593*	steel	HV 100÷200
DIN 126*	steel	HV 100÷200
UNI 6596	steel	HV 100÷200
DIN 436	steel	HV 100÷200
* Withdrawn standard