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