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41xx steel

41xx steel standard Download, We provide the main countries around the ISO standard download, including: AISI(US),UNS(US),SAE(US),ASTM(US),AMS(US),ASME(US),MIL(US),FED(US),DIN(DEU),JIS(JPN),AFNOR(FR),B.S.(UK),SS(SWE),UNI(ITA).

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41xx steel is a family of steel_grades" style="background-image: none; color: rgb(6,69,173); text-decoration: none; background-origin: initial; background-clip: initial" title="SAE steel grades">SAE steel grades, as specified by the Society of Automotive Engineers (SAE).Alloying elements include chromium and Molybdenum" style="background-image: none; color: rgb(6,69,173); text-decoration: none; background-origin: initial; background-clip: initial" title="Molybdenum">molybdenum, and as a result these materials are often referred to aschromoly steel or CRMO. They have an excellent strength to weight ratio and are considerably stronger andharder than standard 1020 steel, but are not easily welded (need pre and post weld thermal treatment to avoidcold cracking).

While these grades of steel do contain chromium, it is not in great enough quantities to provide the corrosionresistance found in steel" style="background-image: none; color: rgb(6,69,173); text-decoration: none; background-origin: initial; background-clip: initial" title="Stainless steel">stainless steel.

Examples of applications for 4130, 4140 and 4145 include structural tubing, bicycle frames, tubes for transportation of pressurized gases, firearms receivers, clutch and flywheel components, and roll cages. 4150 stands out as being one of the steels accepted for use in M16 rifle and M4 carbine barrels by the United States military. These steels are also used in aircraft parts and therefore 41xx grade structural tubing is sometimes referred to as "aircraft tubing".

Properties

**Alloy composition (by weight)**
steel_grades" style="background-image: none; color: rgb(6,69,173); text-decoration: none; background-origin: initial; background-clip: initial" title="SAE steel grades">SAE grade	% Cr	% Molybdenum" style="background-image: none; color: rgb(6,69,173); text-decoration: none; background-origin: initial; background-clip: initial" title="Molybdenum">Mo	% C *	% Mn	% P (max)	% S (max)	% Silicon" style="background-image: none; color: rgb(6,69,173); text-decoration: none; background-origin: initial; background-clip: initial" title="Silicon">Si
4118	0.40–0.60	0.08–0.15	0.18–0.23	0.70–0.90	0.035	0.040	0.15–0.35
4120	0.40–0.60	0.13–0.20	0.18–0.23	0.90–1.20	0.035	0.040	0.15–0.35
4121	0.45–0.65	0.20–0.30	0.18–0.23	0.75–1.00	0.035	0.040	0.15–0.35
4130	0.80–1.10	0.15–0.25	0.28–0.33	0.40–0.60	0.035	0.040	0.15–0.35
4135	0.80–1.10	0.15–0.25	0.33–0.38	0.70–0.90	0.035	0.040	0.15–0.35
4137	0.80–1.10	0.15–0.25	0.35–0.40	0.70–0.90	0.035	0.040	0.15–0.35
4140	0.80–1.10	0.15–0.25	0.38–0.43	0.75–1.00	0.035	0.040	0.15–0.35
4142	0.80–1.10	0.15–0.25	0.40–0.45	0.75–1.00	0.035	0.040	0.15–0.35
4145	0.80–1.10	0.15–0.25	0.43–0.48	0.75–1.00	0.035	0.040	0.15–0.35
4147	0.80–1.10	0.15–0.25	0.45–0.50	0.75–1.00	0.035	0.040	0.15–0.35
4150	0.80–1.10	0.15–0.25	0.48–0.53	0.75–1.00	0.035	0.040	0.15–0.35
4161	0.70–0.90	0.25–0.35	0.56–0.64	0.75–1.00	0.035	0.040	0.15–0.35
^* The carbon composition of the alloy is denoted by the last two digits of the SAE specification number, in hundredths of a percent

Mechanical properties
Material	Condition	Tensile strength [psi (MPa)]	Yield strength [psi (MPa)]	Elongation in 2" [%]	Hardness (Rockwell)
4130	Cold drawn—normalized^[2]	85,000–110,000 psi (590–760 MPa)	70,000–85,000 psi (480–590 MPa)	20–30	B 90–96
4142	Hot rolled—annealed^[2]	90,000–100,000 psi (620–690 MPa)	60,000–70,000 psi (410–480 MPa)	20–30	B 90–95
4142	Cold drawn—annealed^[2]	105,000–120,000 psi (720–830 MPa)	85,000–95,000 psi (590–660 MPa)	15–25	B 96–100
4150	Hot rolled—annealed^[2]	90,000–110,000 psi (620–760 MPa)	65,000–75,000 psi (450–520 MPa)	20–30	B 90–96

Other characteristics

One of the characteristics of this class of steel is the ability to be case hardened by carburization of the surface. The core of the material retains its bulk properties, while the outside is significantly hardened to reduce wear and tear on the part. This makes this grade of steel an excellent material for such uses as gears,piston pins, Crankshaft" style="background-image: none; color: rgb(6,69,173); text-decoration: none; background-origin: initial; background-clip: initial" title="Crankshaft">crankshafts, and bike frames.

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41xx steel

Production specification

Properties

Other characteristics

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41xx steel

Production specification

Properties

Other characteristics

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