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AISI 1040 SAE UNS G10400
Carbon Steel Foundry
Steel foundry in China for producing
AISI 1040 SAE UNS G10400 Carbon Steel castings. The followings are
this material's chemical composition, physical and mechanical
properties and equivalent material grades.
The following
datasheet gives an overview of AISI 1040 carbon steel.
Chemical
Composition
The following
table shows the chemical composition of AISI 1040 carbon steel.
|
Element |
Content
(%) |
|
Iron,
Fe |
98.6-99 |
|
Manganese, Mn |
0.60-0.90 |
|
Carbon,
C |
0.370-0.440 |
|
Sulfur,
S |
≤ 0.050 |
|
Phosphorous, P |
≤ 0.040 |
Physical
Properties
The physical
properties of AISI 1040 carbon steel are tabulated below.
|
Properties |
Metric |
Imperial |
|
Density
(chemical composition of 0.435% C, 0.69% Mn, 0.20% Si,
annealed at 860°C (1580°F)) |
7.845
g/cc |
0.2834
lb/in³ |
|
Melting
point |
1521°C |
2770°C |
Mechanical
Properties
The mechanical
properties of AISI 1040 carbon steel are outlined in the following
table.
|
Properties |
Metric |
Imperial |
|
Tensile
strength |
620 MPa |
89900
psi |
|
Yield
strength |
415 MPa |
60200
psi |
|
Bulk
modulus (typical for steels) |
140 GPa |
20300
ksi |
|
Shear
modulus (typical for steels) |
80 GPa |
11600
ksi |
|
Elastic
modulus |
190-210
GPa |
27557-30458 ksi |
|
Poisson’s ratio |
0.27-0.30 |
0.27-0.30 |
|
Elongation at break (in 50 mm) |
25% |
25% |
|
Reduction of area |
50% |
50% |
|
Hardness, Brinell |
201 |
201 |
|
Hardness, Knoop (converted from Brinell hardness) |
223 |
223 |
|
Hardness, Rockwell B (converted from Brinell hardness) |
93 |
93 |
|
Hardness, Rockwell C (converted from Brinell hardness. Value
below normal HRC range, for comparison purposes only) |
13 |
13 |
|
Hardness, Vickers (converted from Brinell hardness) |
211 |
211 |
|
Izod
impact (annealed at 790°C (1450°F)) |
45 J |
33.2
ft-lb |
|
Izod
impact (as rolled) |
49 J |
36.1
ft-lb |
|
Izod
impact (normalized at 900°C (1650°F) |
65 J |
47.9
ft-lb |
Thermal
Properties
The thermal
properties of AISI 1040 carbon steel are given in the following
table.
|
Properties |
Metric |
Imperial |
|
Thermal
expansion co-efficient (@ 20-100°C/68-212°F, composition of
0.40% C, 0.11% Mn, 0.01% P, 0.03% S, 0.03% Si, 0.03% Cu) |
11.3
µm/m°C |
6.28
µin/in°F |
|
Thermal
conductivity (@ 100°C/212°F) |
50.7 W/mK |
352 BTU
in/hr.ft².°F |
|
Thermal
conductivity (@ 0°C) |
51.9 W/mK |
360 BTU
in/hr.ft².°F |
Other
Designations
Other
designations that are equivalent to AISI 1040 carbon steel include:
ASTM A29 (1040)
ASTM A510
(1040)
ASTM A513
ASTM A519
(1040)
ASTM A546
(1040)
ASTM A576
(1040)
ASTM A682
(1040)
ASTM A827
ASTM A830
MIL S-11310 (CS
1040)
MIL S-16788
MIL S-46070
SAE J1397
(1040)
SAE J403 (1040)
SAE J412 (1040)
Fabrication
and Heat Treatment
Machinability
The
machinability rating of AISI 1040 carbon steel is 60.
Forming
AISI 1040
carbon steel can be formed in the annealed condition.
Welding
AISI 1040
carbon steel can be welded using all welding techniques. It can be
pre-heated at 149 to 260°C (300 to 500°F) and post-heated at 594 to
649°C (1100 to 1200°F) due to its high carbon content.
Heat
Treatment
AISI 1040
carbon steel can be heat treated at 844 to 899°C (1550 to 1650°F)
followed by quenching in water and tempering.
Forging
AISI 1040
carbon steel can be forged at 982 to 1260°C (1800 to 2300°F).
Hot Working
AISI 1040
carbon steel can be hot worked from 94 to 483°C (200 to 900°F ).
Cold Working
AISI 1040
carbon steel can be cold worked in the annealed state using
conventional methods.
Annealing
AISI 1040
carbon steel can be annealed at temperatures ranging from 872 to
983°C (1600 to 1800°F). It can be then slowly cooled in the furnace.
Stress relief annealing process can be performed at a temperature of
about 594°C (1100°F). Normalizing treatment can also be performed at
899°C (1650°F) followed by cooling slowly.
Tempering
AISI 1040
carbon steel can be tempered at 316 to 705°C (600 to 1300°F) based
on the desired strength.
Hardening
AISI 1040
carbon steel can be hardened by performing cold working process.
Applications
AISI 1040
carbon steel can be used in couplings, crankshafts, and cold headed
parts.
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