Gear Steel

We stock DNV certified premium quality Gear Steels Buderus 6587 ISO-B in various dimensions and deliver the same as sawn disks.

DNV certification confirms that:
“Discs sawn from Random length bars using Buderus Edelstahl
ISO-B technology ensures consistent properties as required by
DNV high grade, for rounds up to Dia 1450mm.”

Sizes smaller than 500mm are BG annealed, and bigger dimensions are stocked quenched and tempered with hardness identical to the annealed material.

With proper agreements, we can stock material based on customer specifications so that you can just dial in your requirements for rapid delivery

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Analyse (Mass %)
C	Si	MN	P	S	Cr	Ni0	Mo
0,15 – 0,19	max. 0,4	0,5 – 0,6	max. 0,015	max. 0,005	1,5 – 1,8	1,4 – 1,7	0,25 – 0,35

Designation:

(Mass%) acc. to	EN 10084
ME quality acc. to	ISO 6336 5
	DIN 3990 5
	ZF1A

Delivered Condition:

Heat treatment:

< 500 mm: annealed	Hardness: max. 210 HB
> 500 mm: pre-hardened and tempered	Quality: ISO-B, High Grade

High Cleanliness:

acc. to DIN 50602, k 4: max. 2

acc. to ISO 4967:

A	B	C	D	DS
Thin/Thick	Thin/Thick	Thin/Thick	Thin/Thick	Thin/Max
1.0/1.0	0.5/0.5	1.0/1.0	1.0/1.0	1.0/1.0

Sulphur content: max. 0.005%	Hardenability HH EN 10084
Phosphorous content: max. 0,015%	Ultra sonic tested
Oxygene content: max. 25 ppm	Incl. mill.-cert . acc. to
Largely isotropic material properties	EN 10204-3.1

High Availability:

Recommended heat treatment:
Softening	650 – 700 °C
Carburising	880 – 980 °C
Core hardening	830 – 870 °C
Case hardening	780 – 820 °C
Process annealing	630 – 650 °C