Category | Steel |
Class | Carbon steel |
Type | Standard |
Designations | France: AFNOR XC 42 TS , AFNOR XC 45 , AFNOR XC 48 , AFNOR XC42
Germany: DIN 1.1191
Japan: JIS S 45C , JIS S 48 C
Sweden: SS 1672
United States: ASTM A29 , ASTM A510 , ASTM A519 , ASTM A576 , ASTM A682 , FED QQ-S-635 (C1045) , FED QQ-S-700 (1045) , SAE J403 , SAE J412 , SAE J414 , UNS G10450 |
Element | Weight % |
C | 0.43-0.50 |
Mn | 0.60-0.90 |
P | 0.04 (max) |
S | 0.05 (max) |
| |
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) | 585 | 25 | cold drawn, annealed (round bar (16-22 mm)) more |
Yield Strength (Mpa) | 505 |
Elongation (%) | 12 |
Reduction in Area (%) | 45 |
Hardness (HB) | 170 | 25 | cold drawn, annealed (round bar (19-32 mm)) more |
Thermal Properties |
|
|
Properties | Conditions |
T (°C) | Treatment |
Thermal Expansion (10-6/ÂșC) | 15.1 | 0-700 more | annealed |
Source: efunda
General Characteristics of AISI 1045
AISI 1045 is a low-cost alloy suitable for most engineering and construction applications. A medium-carbon steel with adequate strength and toughness characteristics, AISI 1045 is valuable for induction- or flame-hardened components.
Chemical Composition of AISI 1045
- Carbon 0.43
- Manganese 0.60-0.90
- Phosphorus 0.040 max
- Sulfur 0.050 max
- Silicon 0.15 to 0.30, or:
- 0.10 max
- 0.10-0.20
- 0.20-0.40
- 0.30-0.60
- Iron balance
Heat Treatment of AISI 1045
- 1300°F (704°C) safe tempering maximum
- Normalize by heating to 1575° to 1650°F (857° to 899°C)
- Full anneal at 1500° to 1625°F (816° to 885°C)
- Process anneal after cold working at 1100° to 1225°F (593° to 663°C)
- Harden
- Heat to 1500° to 1600°F (816° to 871°C)
- Water or oil quench
- Temper to appropriate hardness
Applications of AISI 1045
- Cold extrusion
- Cold drawing
- Shafts
- Pins
- Axles
- Rods
- Studs
- Machine parts
- Bolts
- Gears
- Pinions
- Forgings
- Bulldozer edges
Machinability of AISI 1045
- Annealed, normalized, and quenched and tempered state allows easy machining
- Up to 70% of B1112 machinability rating for cold-drawn and annealed stock
- Cobalt high-speed steel or carbide-tip tools
- Sulfurized or chlorinated cutting oils for high-speed steel cutters
- No oil for carbide-tip tools
- Grind high-speed steel turning tools
- 8-12° side rake
- 6-10° back rake
- 7-9° side and end relief
- 12-16° side cutting-edge angle
- 8-14° end cutting-edge angle
- Nose radius 10% of cut depth
- Grind carbide-tip tools
- 6-12° side rake
- 2-8° back rake
- 6-10° side and end relief
- 8-12° end cutting-edge angle
- 8-16° side cutting-edge angel
- 1/32” nose radius
Workability of AISI 1045
- Hot work from 2250° to 1800°F (1232° to 982°C)
- Intermediate annealing required for considerable cold working
- Fully anneal when further cold work will follow extensive cold work
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