AISI 4130 is a through-hardening chromium-molybdenum alloy steel. It is not subject to temper embrittlement. It may be nitrided. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on forming, heat treating, machining, and joining. Filing Code: SA-23. Producer or source: Alloy steel mills and foundries. Originally published November 1954, revised March 1988.

UNS NO. H40470 is a molybdenum (0.20-0.30%) alloy steel of moderate hardness and strength. It has good toughness in the quenched-and tempered condition because it is relatively free from temper embrittlement when tempered in the susceptible range of approximately 850-1100 F. The automotive industry comprises one of its applications. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SA-428. Producer or source: Alloy steel mills and foundries.

AISI 4147 is a medium-carbon alloys steel with relatively high hardenability. It has good resistance to abrasion, fatigue and impact and is recommended for moderately severe service. It is an oil-hardening grade; however, it may be water hardened if suitable precautions are taken to minimize the danger of cracking during quenching. It has a relatively low tendency for the development of temper embrittlement during tempering in the range 850-1 100 H. Typical applications comprise gears, shafting, machine-tool parts, clutch parts and connecting rods. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, joining, and surface treatment. Filing Code: SA-419. Producer or source: Alloy steel mills and foundries.

AISI 4032 is a molybdenum alloy steel of moderate hardenability. It is used extensively in the automotive industry. This steel combines moderate strength and hardness with good ductility and toughness in the quenched-and-tempered condition because it is relatively free from temper embrittlement when tempered in the range 850-1100 F. Among its many uses are nuts, bolts, studs, machinery parts and fasteners for the transportation and other industries. AISI 4032H is a similar steel except that it has a slightly wider range of carbon and manganese. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SA-411. Producer or source: Alloy steel mills and foundries.

AISI 4161 is a low-alloy steel of the chromium-molybdenum type; it contains nominally 0.61% carbon. It has relatively high hardenability and good resistance to abrasion, impact and fatigue. It is an oil-hardening grade and is recommended for moderately heavy-duty service. This steel has a relatively low tendency to develop temper embrittlement when tempered in the approximate range 850-1100 F. Among its many applications are springs, machine-tool parts, shafting, gears, bolts and heavy-duty hand tools. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SA-397. Producer or source: Alloy steel mills and foundries.

SAE 4147 is a medium-carbon low-alloy steel with relatively high hardenability and good resistance to abrasion, fatigue and impact. It is recommended for moderately severe service. Although nominally an oil-hardening grade, SAE 4147 may be water hardened if suitable precautions are taken to minimize the danger of cracking during quenching. It has a relatively low tendency for the development of temper embrittlement during tempering in the range 850-1100 F. Typical applications comprise gears, shafting, machine-tool parts, clutch parts and connecting rods. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SA-375. Producer or source: Alloy steel mills and foundries.

AISI 4142 is a medium-carbon low-alloy steel recommended for moderately heavy-duty service. It is nominally an oil-hardening grade; however, it may be water hardened if suitable precautions are taken to avoid cracking. It has a relatively low tendency to develop temper embrittlement. It has a variety of applications including bolts, crankshafts, wrenches, clutch parts and shafting. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SA-370. Producer or source: Alloy steel mills and foundries.

AISI 4137 is a medium-carbon low-alloy steel suitable for heavy-duty service. It is nominally an oil-hardening steel; however, it may be water hardened if suitable precautions are taken to avoid cracking. Its many uses include axles, fittings, gears, crankshafts and nitrided parts. It has a low tendency to develop temper embrittlement. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SA-366. Producer or source: Alloy steel mills and foundries.

AISI 4028 is a molybdenum (0.20-0.30%) alloy steel containing 0.035-0.050% sulfur to provide improved and less variable machinability over a similar steel specified at 0.040% sulfur max. It combines moderate strength with good toughness in the quenched-and-tempered condition because it is relatively free from temper embrittlement when tempered in the range 850-1100 F. The automotive industry is one of its applications. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SA-333. Producer or source: Alloy steel mills and foundries.

AISI 4047 is a molybdenum (0.20-0.30%) alloy steel of moderate hardness and strength. It has good toughness in the quenched-and-tempered condition because it is relatively free from temper embrittlement when tempered in the susceptible range of approximately 850-1100 F. The automotive industry comprises one of its applications. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SA-329. Producer or source: Alloy steel mills and foundries.

AISI 4150 is a through hardening chromium-molybdenum medium carbon steel not subject to temper embrittlement. It is recommended for heavy duty service. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: SA-59. Producer or source: Alloy steel mills and foundries.