Fernite of Sheffield Limited
Coleford Road, Sheffield. S9 5NJ
Tel: 0114 244 0527
Fax: 0114 244 5922
email: sales@fernite.co.uk

Spring Steel & Shim Steel Strip Stockholders

We carry a range of sizes and different specifications of Martensitic Hardened and Tempered Stainless Steels that are generally categorized as 420 grade. Please contact us for detailed information regarding the actual specification and hardness for a specific thickness.

BS420S37 equivalent to W. 1.4021, X20Cr13, Z20C13 Hardness range 42/46 HRC
BS420S45 equivalent to W. 1.4028, X30Cr13, Z30C13 Hardness range 48/52 HRC
                                          W. 1.4034, X40Cr14, Z40C14 Hardness range 48/52 HRC

Comparative analysis % Carbon Chrome Silicon Manganese BS420S37 - 1.4021   0.20/0.28 12.0/14.0 1.0max 1.0max BS420S45 - 1.4028   0.28/0.36 12.0/14.0 0.8max 1.0max 1.4034   0.42/0.50 12.5/14.5 1.0 max 1.0 max

Thickness in mm	1.4 42/46 HRC	1.4 48/52 HRC	1.4028 + 1% Mo 50/53 HRC
0.50	# coil	# coil
0.60	# coil	# coil
0.70			# coil
0.80	# coil	# coil & sheet	# coil
0.90			# coil
1.00		# coil & sheet
1.20	# coil
1.60		# sheet
2.00		# sheet
2.50		# sheet
3.00		# sheet

Width can be slit to order.

Typical application: Where rust resistance is desirable as in gas, oil and food industries. Clutch parts, valves, leaf springs, doctor blades, machine knives, saw blades, blanked parts, laser and water jet cutting, photo etching.

Email for stock availability