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AISI 1020
Category Steel
Class Carbon steel
Type Standard
Designations  France: AFNOR CC 20
Germany: DIN 1.0402
Italy: UNI C 20
Sweden: SS 1450
United Kingdom: B.S. 040 A 20 , B.S. 070 M 20
United States: AMS 5032 , AMS 5032B , AMS 5045 , AMS 5045C , ASTM A108 , ASTM A29 , ASTM A510 , ASTM A519 , ASTM A544 , ASTM A575 , ASTM A576 , ASTM A659 , MIL SPEC MIL-S-11310 (CS1020) , SAE J403 , SAE J412 , SAE J414 , UNS G10200

Composition
ElementWeight %
C  0.18-0.23 
Mn  0.30-0.60 
P  0.04 (max) 
S  0.05 (max) 

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) 394.7  25  annealed at 870°C  more
Yield Strength (Mpa) 294.8 
Elongation (%) 36.5 
Reduction in Area (%) 66.0 
Hardness (HB) 111  25  annealed at 870°C more
Impact Strength (J)
(Izod)
123.4  25  annealed at 870°C  more

Thermal Properties
Properties Conditions 
T (°C)Treatment
Thermal Expansion (10-6/ºC) 14.8  20-700 more annealed 
Glossary
CNC Machining Design Guide

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

Salary Expectation

8 things to know about the interview question "What's your salary expectation"?

Essentials of Manufacturing

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

Selecting the Right 3D Printer

Discover how to choose the right 3D printer for your needs and the key performance attributes to consider.