Heat Treating Black Spring Steel Strip

material: 65MN  C50  CK67  CK50  SEA1050 T8A T10A 60SI2MN

size: thickness: 0.25-2.50mm width:40-250mm length:3-6Meter

color: black, blue/bright/yellow polished

finish: hardened & tempered, HRC42-50, round or cutting edge

application: spring, band saw, trowel, shovel, scrapers, shoe insole, spring washer, shutter spring etc

packing: oiled, sea-worthy packing

quality: prime with good flatness & flexibility