Phosphor Bronze ::::

Chemical Composition Of Phosphor Bronze
	Normal Composition						Nearest Relevant Specification
Material Grade	Sn(%)	P(%)	Pb(%)	Zn(%)	Total Imp (%)	Cu(%)	BS: 2870	ISO
I	3.5-4.5	0.02-.40	0.02Max	0.30Max	0.50 Max	Rem.	PB 101	ISO 427 CuSn4
II	4.5-5.5	0.02-0.40	0.02Max	0.30Max	0.50 Max	Rem.	PB102	ISO 427 CuSn5
III	5.5-7.5	0.02-0.40	0.02Max	0.30Max	0.50 Max	Rem.	PB103	ISO 427 CuSn6
* Material conforming to other National Specification e.g. ASTM, DIN etc. is also provided. * Available in Strips, Sheets, Plates & Circles form.

Phosphor Bronze TYPICAL MECHANICAL PROPERTIES AS PER : B.S. : 2870
Material	Temper	Tensile Strength N/mm2	Elongation% on 50 mm G.L	Vickers Hardness VPN	ISO
PHOSPHOR BRONZE GRADE-I	O 1/4 H 1/2 H H EH	295 Min 340 Min 430 Min 510 Min 620 Min	40 Min 30 Min 8 Min 4 Min -	80 max 100 Min 150 Min 180 Min 180 Min	ISO 427 Cu Sn4
PHOSPHOR BRONZE GRADE-II	O 1/4 H 1/2 H H EH SH	310 Min 350 Min 495 Min 570 Min 645 Min -	45 Min 35 Min 10 Min 4 Min -	85 max 110 Min 160 Min 180 Min 200 Min 230 Max	ISO 427 Cu Sn5
PHOSPHOR BRONZE GRADE-III	O 1/4 H 1/2 H H EH SH ESH	340 Min 385 Min 525 Min 620 Min 695 Min - -	50 Min 40 Min 12 Min 6 Min -	9 max 115 Min 170 Min 200 Min 215 Min 240 Max 240 Min	ISO 427 Cu Sn6