In this post I'll talk about SAE 1118. First let's describe it and then have a look at its material's properties.
What is SAE 1118?
SAE 1118 carbon steel is a free machining steel. It is added with sulfur in order to improve its machining characteristics.Application
SAE 1118 carbon steel can be mainly used in free machining stock such as fasteners and screws.UNS Number
G11180Ok let's start with SAE 1118 Chemical Composition.
Chemical Composition
C, Carbon
0.14–0.20Mn, Manganese
1.30–1.60P, Phosphorus max.
0.040 maxS, Sulfur
0.08–0.13Learn more about Chemical Composition.
Now it's the mechanical properties turn:
Yield Strength
Typical properties
35 ksi, 241 MPa (Hot Rolled). 60 ksi, 414 MPa (Cold Worked). 55 ksi, 379 MPa (Stress Relieved). 30 ksi, 207 MPa (Annealed). 35 ksi, 241 MPa (Normalized)Learn more about Yield Strength.
Tensile Strength
Typical properties
50 ksi, 345 MPa (Hot Rolled). 75 ksi, 517 MPa (Cold Worked). 70 ksi, 483 MPa (Stress Relieved). 50 ksi, 345 MPa (Annealed). 55 ksi, 379 MPa (Normalized)Learn more about Tensile Strength.
Elongation (min.) 50 mm typical
25% (Hot Rolled). 5% (Cold Worked). 8% (Stress Relieved). 25% (Annealed). 20% (Normalized).Learn more about Elongation.
Hardness
Typical Rockwell
55 HRB (Hot Rolled). 80 HRB (Cold Worked). 75 HRB (Stress Relieved). 55 HRB (Annealed). 60 HRB (Normalized)Learn more about Hardness.
Density
7.8 g/cm3.Learn more about Density.
Elastic Modulus
190 GPa.Learn more about Elastic Modulus.
Poisson's ratio
0.29.Learn more about Poisson's ratio.
Allowable Stress or Factor of Safety
Depends on the project (And its factor of safety).Learn more about Allowable Stress or Factor of Safety.
My Material's Ranking Research
While engineers will often look for the cheapest material they can use, I took a different approach to material's selection to help newbie students.I ranked materials according to their yield strengths and SAE 1118 currently ranks 151 in my yield strength index. This means there are other 150 materials that are more resistant.
Note: I've analysed 162 materials in order to create an yield strength index. Check my material's comparison post for more details.
SAE Classroom
Are you having trouble understanding the basics of SAE?What is SAE: Classification and specification?
This video will walk you through:
References
ASTM A519 and other references.Citation
When you need to include a fact or piece of information in an assignment or essay you should also include where and how you found that piece of information.That gives credibility to your paper and it is sometimes required in higher education.
To make your life (and citation) easier just copy and paste the information below into your assignment or essay:
Luz, Gelson. SAE 1118 Properties (Chem., Mech. & Rankings). Materials Blog. Gelsonluz.com. dd mmmm. yyyy. URL
Now replace dd, mmmm and yyyy with the day, month, and year you browsed this page. Also replace URL for the actual url of this page. This citation format is based on MLA.
Equivalent Specifications
ASTM A29ASTM A510
ASTM A576
SAE J1397
SAE J403
SAE J412
ASTM A107
ASTM A108
FED QQ-S-637 (1118)
SAE J414
COMMENTS