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ASTM A 305 LF1 Material Chemical Composition, Physical Properties For ASTM A 305 LF1
ASTM A 305 is the American Standard for Carbon and low-Alloy Steel Forgings. And seven Grades Mentioned in this Book. Grade names are LF1, LF2, LF3, LF5, LF6, LF9, LF787.
Here We Shall be going to tell you about ASTM A 305 Grade LF1 Chemical Compositions and Mechanical Properties.
Chemical Composition For ASTM A 305 Grade LF1
| Chemical Elements | SUGGESTED VALUE FOR GRADE LF1 |
| Carbon (C) | 0.30 % (Max.) |
| Manganese (Mn) | 0.60 To 1.35 % |
| Silicon (Si) | 0.15 To 0.30 % |
| Sulphur (S) | 0.040 % (Max.) |
| Phosphorus (P) | 0.035 % (Max.) |
| Chromium (Cr) | 0.30 % (Max.) |
| Nickel (Ni) | 0.40 % (Max.) |
| Molybdenum (Mo) | 0.12 % (Max.) |
| Copper (Cu) | 0.40 % (Max.) |
| Columbium (Nb) | 0.02 % (Max.) |
| Vanadium (V) | 0.08 % (Max.) |
| Nitrogen (N) | —– |
Mechanical / Physical Properties For ASTM A 305 Grade LF1
| Mechanical/Physical Properties | SUGGESTED VALUE FOR GRADE LF1 |
| Tensile strength | 60-85 Ksi (415-585 Mpa) |
| Yield strength | 30 Ksi (205 Mpa) [ Minimum ] |
| Standard round specimen, or small proportional specimen, min % in 4D gage length Strip specimen for wall thickness 5⁄16 in. [7.94 mm] and over and for all small sizes tested in full section; min % in 2 in. [50 mm] | 28 |
| Equation for calculating min elongation for strip specimens thinner than 5⁄16 in. [7.94 mm]; min % in 2 in. [50 mm] t = actual thickness in inches | 48t + 13 |
| Reduction of area, min, % | 38 |
Charpy V-Notch Energy Requirements for Standard Size [10 by 10 mm] Specimens
| DETAILS | SUGGESTED VALUE FOR GRADE LF1 |
| Minimum Impact Energy Required for Average of Each Set of Three Specimens, ft·lbf[J] | 13 ft·lbf (18J) |
| Minimum Impact Energy Permitted for One Specimen only of a Set, ft·lbf[J] | 10 ft·lbf (14J) |
MayBe Required: Chemical Composition And Mechanical/Physical Properties of ASTM A 105
Standard Impact Test Temperature for Standard Size [10 by 10 mm] Specimens
| DETAILS | SUGGESTED VALUE FOR GRADE LF1 |
| Impact Test Temperature For LF1 | −20 °F [−29 °C] |
Chemical Composition and Mechanical / Physical Properties For
1. ASTM A 305 Grade LF2
2. ASTM A 305 Grade LF3
3. ASTM A 305 Grade LF5
4. ASTM A 305 Grade LF6
5. ASTM A 305 Grade LF9
6. ASTM A 305 Grade LF787
