Strength of Alloy 4027?

"Caroline" schrieb im Newsbeitrag news:oglzc.9269$ snipped-for-privacy@newsread2.news.atl.earthlink.net...

Google #1 hit for "alloy 4027" :

"Andreas Rutz" wrote

Thank you. The site above shows a modulus of elasticity of about 29,000 psi, which is usual for steels.

I thought the tensile strength might be quite a bit more than for more "ordinary steels" (pardon the non-scientific terminology).

Aside: I got exactly one Google hit for "alloy 4027" and it wasn't the link above. I did a lot of other searches but came up empty-handed.

From Matweb: [Yield strength varies with temper. Here is the annealed version]

Subcategory: AISI 4000 Series Steel; Low Alloy Steel; Low Carbon Steel; Metal

Key Words: UNS G40270, ASTM A322, ASTM A331, ASTM A519, SAE J404, SAE J412, SAE J770, alloy steels

Component Wt. % C 0.25 - 0.3 Fe 98.08 - 98.7 Mn 0.7 - 0.9 Mo 0.2 - 0.3 P Max 0.035 S Max 0.04 Si 0.15 - 0.35

Material Notes: Annealed (heated to 865°C (1590°F), furnace cooled 11°C/hr to 425°C, air cooled). Normalizing temp.: 905°C. Carburizing temp.: 900 - 925°C.

Physical Properties Metric English Comments Density 7.85 g/cc 0.284 lb/in³

Mechanical Properties Hardness, Brinell 143 143 Hardness, Knoop 163 163 Converted from Brinell hardness. Hardness, Rockwell B 78 78 Converted from Brinell hardness. Hardness, Vickers 149 149 Converted from Brinell hardness. Tensile Strength, Ultimate 515 MPa 74700 psi Tensile Strength, Yield 325 MPa 47100 psi Elongation at Break 30 % 30 % in 50 mm Reduction of Area 52.9 % 52.9 % Modulus of Elasticity 205 GPa 29700 ksi Typical for steel Bulk Modulus 140 GPa 20300 ksi Typical for steel Poisson's Ratio 0.29 0.29 Calculated Machinability 70 % 70 % annealed and cold drawn. Based on 100% machinability for AISI 1212 steel. Shear Modulus 80 GPa 11600 ksi Typical for steel

Electrical Properties Electrical Resistivity 2.45e-005 ohm-cm 2.45e-005 ohm-cm This value is an average of known electrical resistivities of 4000 series steels and is expected to be within 10% of the experimental value

Thermal Properties Heat Capacity 0.475 J/g-°C 0.114 BTU/lb-°F Average heat capacity for

"Brian Whatcott" wrote

Thank you.