STEEL MATERIAL GRADES

CS 70 and CK67: Carbon steel which, after hardening and tempering, has excellent strength and fatigue resistance which makes them ideal for spring pins, both coiled and slotted.

AISI 304 and WS 1.4310: Austenitic stainless steel, unhardenable and with low magnetic permeability, used
for both coiled and slotted spring pins where corrosion resistance is needed.

WS 1.3505: Hardenable high carbon steel with chrome content used for through-hardened dowels in the metric range.

WS 1.4305 and 303S31 (A2): Unhardenable austenitic stainless steel with low magnetic permeability used for dowels, grooved pins, taper pins and threaded spacers where corrosion resistant properties are required.

Silver Steel to BS 1407: A through-hardenable high carbon steel used for dowels and small turned parts.

WS 1.4571 and 316S11 (A4): Unhardenable austenitic stainless steel with low magnetic permeability, but with very high corrosion resistance used for dowels.

431S29 (C1): A hardenable martensitic stainless steel used for dowels requiring the maximum shear strength, combined with corrosion resistance.

WS 1.0718 (9SMnPb28): Leaded mild steel used for dowels, taper pins and grooved pins.

S300 Pb: Leaded mild steel used for threaded spacers.

AISI 1010: Low carbon steel used for roll-formed clearance spacers.

WS 1.0503 (C45k): Standard Key steel with a minimum tensile strength of 60 Kg/mm².

Type Of Steel	Carbon C	Manganese Mn	Phosphorus P	Sulphur S	Silicon SI	Chrome Cr	Lead Pb	Nickel NI	Molybdenum Mo	Titanium TI
CS 70	0.65-0.75	0.5-0.9	0.045 Max	0.045 Max	0.35-0.50
AISI 304	0.08 Max	2.0 Max	0.045 Max	0.030 Max	1.0 Max	18.0-20.0		8.0-10.5
WS 1.4301	0.07 Max	2.0 Max	0.045 Max	0.030 Max	1.0 Max	17.0-19.0		8.5-10.5
303S31	0.12 Max	2.0 Max	0.060 Max	0.15-0.35	1.0 Max	17.0-19.0		8.0-10.0	1.0 Max
WS 1.3505	0.90-1.05	0.25-0.45	0.030 Max	0.025 Max	0.15-0.35	1.35-1.65		0.30 Max
WS 1.4305	0.12 Max	2.0 Max	0.060 Max	0.15-0.35	1.0 Max	17.0-19.0		8.0-10.0
WS 1.4571	0.08 Max	2.0 Max	0.045 Max	0.030 Max	1.0 Max	16.5-18.5		10.5-13.5	2.0-2.5	0.8 Max
316S11	0.03 Max	2.0 Max	0.045 Max	0.030 Max	1.0 Max	16.5-18.5		11.0-14.0	2.0-2.5
431S29	0.12-0.20	1.0 Max	0.040 Max	0.030 Max	1.0 Max	15.0-18.0		2.0-3.0
WS 1.0718	0.14 Max	0.90-1.30	0.100 Max	0.27-0.33	0.05 Max		0.15-0.35
S300 Pb	0.14 Max	1.00-1.50	0.100 Max	0.32-0.40	0.05 Max		0.20-0.30
AISI 1010	0.06-0.13	0.30-0.60	0.040 Max	0.05 Max	0.4 Max
Silver Steel	0.95-1.25	0.25-0.45	0.045 Max	0.045 Max	0.4 Max	0.5 Max
WS 1.0503	0.42-0.50	0.50-0.80	0.045 Max	0.045 Max	0.4 Max	0.4 Max		0.40 Max	0.10 Max

STANDARDS

TOLERANCES

HOLE SIZES