55Si2Mn 56Si7 1.5026 Spring Steel-Special Steel-HAIXIANG METAL TECHNOLOGY (HANGZHOU) CO., LTD.

55Si2Mn 56Si7 1.5026 Spring Steel

Prouduct name: 55Si2Mn 56Si7 1.5026 Spring Steel

abstract: 55Si2Mn 56Si7 1.5026 AISI 9255 Spring Steel

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55Si2Mn 56Si7 1.5026 AISI 9255 Spring Steel

Chemical composition % of the ladle analysis of grade AISI 9255 and Standards

Designations

France: AFNOR 55 S 7
Germany: DIN 1.0904
Italy: UNI 55 Si 8
Sweden: SS 2090
United Kingdom: B.S. 250 A 53
United States: ASTM A322 , SAE J404 , SAE J412 , SAE J770 , UNS G92550

Chemical Composition

Element
Weight %
C
0.51-0.59
Mn
0.70-0.95
P
0.035 (max)
S
0.04 (max)
Si
1.80-2.20

Mechanical Properties

Properties
Conditions
T (°C)
Treatment
Density (×1000 kg/m³)
7.7-8.03
25
Poisson's Ratio
0.27-0.30
25
Elastic Modulus (GPa)
190-210
25
Tensile Strength (Mpa)
774.3
25
annealed at 845°C
Yield Strength (Mpa)
486.1
Elongation (%)
21.7
Reduction in Area (%)
41.1
Hardness (HB)
229
25
annealed at 845°C
Impact Strength (J)
(Izod)
8.8
25
annealed at 845°C

Element	Weight %
C	0.51-0.59
Mn	0.70-0.95
P	0.035 (max)
S	0.04 (max)
Si	1.80-2.20

Properties		Conditions
Properties		T (°C)	Treatment
Density (×1000 kg/m³)	7.7-8.03	25
Poisson's Ratio	0.27-0.30	25
Elastic Modulus (GPa)	190-210	25
Tensile Strength (Mpa)	774.3	25	annealed at 845°C
Yield Strength (Mpa)	486.1
Elongation (%)	21.7
Reduction in Area (%)	41.1
Hardness (HB)	229	25	annealed at 845°C
Impact Strength (J) (Izod)	8.8	25	annealed at 845°C