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AISI 9255
Conditions Tensile Properties 
T (°C)Treatment
25 annealed at 845°C   Tensile Strength (MPa) 774.3 
Yield Strength (MPa) 486.1 
Elongation (%) 21.7 
Reduction in Area (%) 41.1 
25 normalized at 900°C   Tensile Strength (MPa) 932.9 
Yield Strength (MPa) 579.2 
Elongation (%) 19.7 
Reduction in Area (%) 43.4 
25 oil quenched, fine grained, tempered at 205°C   Tensile Strength (MPa) 2103 
Yield Strength (MPa) 2048 
Elongation (%)
Reduction in Area (%)
25 oil quenched, fine grained, tempered at 315°C   Tensile Strength (MPa) 1937 
Yield Strength (MPa) 1793 
Elongation (%)
Reduction in Area (%) 10 
25 oil quenched, fine grained, tempered at 425°C   Tensile Strength (MPa) 1606 
Yield Strength (MPa) 1489 
Elongation (%)
Reduction in Area (%) 22 
25 oil quenched, fine grained, tempered at 540°C   Tensile Strength (MPa) 1255 
Yield Strength (MPa) 1103 
Elongation (%) 15 
Reduction in Area (%) 32 
25 oil quenched, fine grained, tempered at 650°C   Tensile Strength (MPa) 993 
Yield Strength (MPa) 814 
Elongation (%) 20 
Reduction in Area (%) 42 
Glossary
Injection Molding Design Guide

Guide for high quality and cost-effective plastic injection molding.

CNC Machining Design Guide

Optimize your designs, reduce machining time, and lower your costs.

Essentials of Manufacturing

Information, coverage of important developments and expert commentary in manufacturing.

Negotiate Your Salary

Learn the best principles to negotiate the salary you deserve!