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Glossary » Materials » Alloys » Steel » Alloy Steel » ASTM A387 Grade 5
ASTM A387 Grade 5 is categorized as Alloy Steel. It is composed of (in weight percentage) 0.15% Carbon (C), 0.30-0.60% Manganese (Mn), 0.04% Phosphorus (P), 0.030% Sulfur (S), 0.50% Silicon (Si), 4.00-6.00% Chromium (Cr), 0.45-0.65% Molybdenum (Mo), and the base metal Iron (Fe). Another common designation of ASTM A387 Grade 5 alloy steel is UNS K41545.
Steel is the common name for a large family of iron alloys. Steels can either be cast directly to shape, or into ingots which are reheated and hot worked into a wrought shape by forging, extrusion, rolling, or other processes. Wrought steels are the most common engineering material used, and come in a variety of forms with different finishes and properties. Alloy steels are steels that exceed the element limits for Carbon steels. However, steels containing more than 3.99% chromium are classified differently as stainless and tool steels. Alloy steels also includes steels that contain elements not found in carbon steels such as nickel, chromium (up to 3.99%), cobalt, etc.

The typical elastic modulus of alloy steels at room temperature (25°C) ranges from 190 to 210 GPa. The typical density of alloy steels is about 7.85 g/cm3. The typical tensile strength varies between 758 and 1882 MPa. The wide range of ultimate tensile strength is largely due to different heat treatment conditions.

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

STEM Career Outlook

Wages, employment opportunities, and growth projections for STEM jobs.

Essentials of Manufacturing

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

Metal 3D Printing Design Guide

Direct Metal Laser Sintering (DMLS) 3D printing for parts with reduced cost and little waste.