IS 11169 Grade 1 Steel — Specifications & Listings

IS 11169

IS 11169 Grade 1 is a spring steel per Indian Standard IS 11169, equivalent to 55Si7 and EN47. It offers high fatigue strength and resilience for automotive and industrial spring applications.

Category: Alloy Steel

Grade Details

Grade	IS 11169 Grade 1
Standard	IS 11169
Description	IS 11169 Grade 1 is a spring steel per Indian Standard IS 11169, equivalent to 55Si7 and EN47. It offers high fatigue strength and resilience for automotive and industrial spring applications.
Applications	leaf springs,coil springs,automotive suspension springs,industrial springs,washer springs

Equivalent / Similar Grades

Grade	Standard	Region
55Si7	DIN EN 10089	Germany
55Si7	EN 10089	Europe
EN47	BS 970	UK
SUP9	JIS G4801	Japan
AISI 9255	AISI	USA
60S2A	GOST	Russia

Chemical Composition (%)

C	Si	Mn	P	S
0.50-0.60	1.50-2.00	0.60-0.90	<=0.040	<=0.040

Mechanical Properties

tensile_strength	1250-1550 MPa
yield_strength	1100 MPa min
elongation	6-10 %
hardness	40-48 HRC

Typical Available Sizes

Flat Bar	25-120 mm
Round Bar	12-80 mm

Sizes are indicative. Contact seller for exact availability.

Active IS 11169 Grade 1 Listings on M-EX

No active IS 11169 Grade 1 listings at this time.