AISI 9255 DIN 1.0904 UNI 55 Si 8 B.S. 250 A 53 ASTM A322 , SAE J404 , SAE J412 , SAE J770 , UNS G92550

AISI 9255 DIN 1.0904 UNI 55 Si 8 B.S. 250 A 53 ASTM A322 , SAE J404 , SAE J412 , SAE J770 , UNS G92550 Category  Steel Class  Alloy steel Type  Standard Common Names  Silicon-manganese steel 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 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   Article 005 Created 3-2-2006 Author webmaster

Makale 074 Yazan: 5-12-2006 De�i�tiren 2-25-2007 Yazar webmaster Rating

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