BS 4659 BO2 Steel - Specifications, Equivalents & Listings

Forms: Round Bar Category: Tool & Die Steels

Grade Details

Grade	BS 4659 BO2
Standard	BS 4659
Description	British oil hardening cold work tool steel
Applications	Taps, drills, reamers, punches, gauges

Equivalent / Similar Grades

Grade	Standard	Region	Live on M-EX
O2	AISI	USA	3 listings, 3 RFQs →
90MnCrV8	DIN	Germany	3 listings, 0 RFQs →
SKS93	JIS	Japan	0 listings, 2 RFQs →
GOST 9HF	GOST 5950	Russia	2 listings, 0 RFQs →
GB/T 9CrWMn	GB/T 1299	China	2 listings, 0 RFQs →

Round Bar →

Demand, no supply

Chemical Composition (%)

C	Mn	Cr	Si
0.85–0.95	1.40–1.80	≤0.30	≤0.30

Mechanical Properties

Hardness HRC (hardened)	57–62
Hardness HB (annealed)	≤217

Typical Available Sizes

Round Bar	8mm–150mm dia
Flat Bar	10×5mm–150×30mm

Sizes are indicative. Contact seller for exact availability.

Active BS 4659 BO2 Listings on M-EX (For Sale)

No active BS 4659 BO2 listings at this time.

BS 4659 BO2 Round Bar

2.100 MT

View RFQ

BS 4659 BO2 Round Bar

1.100 MT

View RFQ