{"id":4510,"date":"2023-04-17T07:19:45","date_gmt":"2023-04-17T07:19:45","guid":{"rendered":"https:\/\/qilusteelgroup.com\/?post_type=product&p=4510"},"modified":"2024-02-26T08:56:02","modified_gmt":"2024-02-26T08:56:02","slug":"4130-1-7218-25crmo4-scm430","status":"publish","type":"product","link":"https:\/\/qilusteelgroup.com\/de\/produkt\/4130-1-7218-25crmo4-scm430\/","title":{"rendered":"4130\/1.7218\/25CrMo4\/SCM430"},"content":{"rendered":"

AISI 4130 alloy steel is a medium carbon, low alloy steel in\u00a0ASTM A29<\/a>\u00a0standard. ASTM 4140 steel is also commonly referred to as a chromoly steel, or chrome moly steel, containing nominally 0.28-0.33% Carbon, 0.8-1.1% Chromium and 0.15-0.25% Molybdenum. It is similar to 4140 steel which has a higher carbon level (0.28-0.33%), giving 4130 material improved weldability, at the expense of through thickness strength. With the proper heat treatment it is also readily machined. Annealing ASTM 4130 alloy steel offers excellent ductility. AISI 4130 steel is usually supplied as round bar commonly in the hardened and tempered condition.<\/p>\n

Chemische Zusammensetzung<\/h4>\n\n\n\n\n\n\n
Standard<\/td>\nGrade<\/td>\nC<\/td>\nMn<\/td>\nP<\/td>\nS<\/td>\nSi<\/td>\nCr<\/td>\nMo<\/td>\n<\/tr>\n
ASTM A29<\/td>\n4130<\/td>\n0.28-0.33<\/td>\n0.40-0.60<\/td>\n0.035<\/td>\n0.040<\/td>\n0.15-0.35<\/td>\n0.80-1.10<\/td>\n0.15-0.25<\/td>\n<\/tr>\n
EN10250
\n\/EN10083<\/td>\n		25CrMo4\/
\n1.7218<\/td>\n		0.22-0.29<\/td>\n0.60-0.90<\/td>\n0.025<\/td>\n0.035<\/td>\n\u22660.40<\/td>\n0.90-1.2<\/td>\n0.15-0.30<\/td>\n<\/tr>\n
JIS G4105<\/td>\nSCM430\/
\nSCM2<\/td>\n		0.28-0.33<\/td>\n0.60-0.85<\/td>\n0.030<\/td>\n0.030<\/td>\n0.15-0.35<\/td>\n0.90-1.2<\/td>\n0.15-0.30<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Application<\/h4>\n

AISI 4130 steel alloy is used primarily in the construction of commercial and military aircraft and ground support systems.<\/p>\n

Alloy steel 4130 is an intermediate strength material. Lighter gauges offer lighter weight but still maintain great strength, making it excellent for auto racing and aerospace.<\/p>\n

This low alloy 4130 steel is widely used in many applications, and some typical application areas are as follows:<\/p>\n

Commercial aircraft, aircraft engine mounts<\/p>\n

Military aircraft<\/p>\n

Automobilindustrie<\/p>\n

Machine tools<\/p>\n

Hydraulic tools<\/p>\n

Auto racing<\/p>\n

Luft- und Raumfahrt<\/p>\n

Oil and gas industries \u2013 as forged valve bodies and pumps<\/p>\n

Agricultural and defense industries etc.<\/p>\n

AISI 4130 Steel\u00a0Mechanical\u00a0Properties<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Properties<\/td>\nMetric<\/td>\n<\/tr>\n
Tensile strength, ultimate<\/td>\n560 MPa<\/td>\n<\/tr>\n
Tensile strength, yield<\/td>\n460 MPa<\/td>\n<\/tr>\n
Modulus of elasticity<\/td>\n190-210 GPa<\/td>\n<\/tr>\n
Bulk modulus (Typical for steel)<\/td>\n140 GPa<\/td>\n<\/tr>\n
Shear modulus (Typical for steel)<\/td>\n80 GPa<\/td>\n<\/tr>\n
Poissons ratio<\/td>\n0.27-0.30<\/td>\n<\/tr>\n
Elongation at break (in 50 mm)<\/td>\n21.50%<\/td>\n<\/tr>\n
Reduction of area<\/td>\n59.6<\/td>\n<\/tr>\n
Hardness, Brinell<\/td>\n217<\/td>\n<\/tr>\n
Hardness, Knoop (Converted from Brinell hardness)<\/td>\n240<\/td>\n<\/tr>\n
Hardness, Rockwell B (Converted from Brinell hardness)<\/td>\n95<\/td>\n<\/tr>\n
Hardness, Rockwell C (Converted from Brinell hardness, value below normal HRC range, for comparison purposes only.)<\/td>\n17<\/td>\n<\/tr>\n
Hardness, Vickers (Converted from Brinell hardness)<\/td>\n228<\/td>\n<\/tr>\n
Machinability (Annealed and cold drawn. Based on 100% machinability for AISI 1212 steel.)<\/td>\n70<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

AISI 4130 Steel Grade\u00a0Heat Treatment<\/h4>\n

Annealing of 4130 steels<\/b><\/strong><\/p>\n

Annealing of 4130 steel forgings may be carried out by transferring the part straight from the forging operation to a furnace held at a suitable temperature, around 860\u00ba C (1575 \u00ba F) for annealing, holding for a suitable time then furnace cooling. In this way a structure suitable for machining may be obtained. This treatment is best used for parts with simple shapes. If the 4130 forging is such that some sections will finish much colder than others then a uniform structure will not be obtained and for best results a spheroidizing anneal at around 750 \u00ba C (1380 \u00ba F) may be used. It is safe to say that experience alone will decide the best type of annealing treatment to be used prior to machining.<\/p>\n

It should then be cooled in the furnace at a rate of less than 50 F per hour down to 900 F, followed by air cooling from 900 F.<\/p>\n

Normalizing of\u00a0Alloy Steel 4130<\/b><\/strong><\/p>\n

The nominal normalizing temperature for 4130 is 900 \u00ba C (1650 \u00ba F) followed by the 1600 F soak and oil quench, but production experience may necessitate a temperature either 50 \u00ba F (10 \u00ba C) above or below this figure. In fact when forgings are normalized before, for example, carburizing or hardening and tempering, the upper range of normalizing temperatures is used. When normalizing is the final heat treatment, the lower temperature range is used.<\/p>\n

Hardening of AISI 4130 Alloy Steel<\/b><\/strong><\/p>\n

The steel 4130 should be austenitized \u2013 i.e. all micro constituents transformed to austenite \u2013 at 1500 to 1600 \u00ba F (815 to 870 \u00ba C). The actual austenitizing temperature is a function of chemical composition within the analysis range, section size and cooling method. Smaller sections of 4130 might be quenched in oil, heavier sections in water.<\/p>\n

Tempering of\u00a04130 Steel<\/b><\/strong><\/p>\n

The actual tempering temperature will depend on what required properties are needed. Alloy steel 4130 is tempered at between 398 \u00baC -565 \u00baC (750 F and 1050 F), depending upon the strength level desired. The lower the tempering temperature the greater the strength. However, tempering should not be carried out between 200 \u2013 420 \u00baC (400 \u2013 790 \u00ba F) to avoid the danger of embrittlement.<\/p>\n

 <\/p>","protected":false},"excerpt":{"rendered":"

AISI\/SAE 4130 steel grade is a versatile alloy with good atmospheric corrosion resistance and reasonable strength up to around 315\u00ba C (600\u00ba F). It shows good overall combinations of strength, toughness and fatigue strength.<\/p>","protected":false},"featured_media":4511,"comment_status":"open","ping_status":"closed","template":"","meta":{"_gspb_post_css":""},"product_brand":[],"product_cat":[17,24],"product_tag":[],"class_list":{"0":"post-4510","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-all-products","7":"product_cat-alloy-steel","9":"first","10":"instock","11":"shipping-taxable","12":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/qilusteelgroup.com\/de\/wp-json\/wp\/v2\/product\/4510","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/qilusteelgroup.com\/de\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/qilusteelgroup.com\/de\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/qilusteelgroup.com\/de\/wp-json\/wp\/v2\/comments?post=4510"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/qilusteelgroup.com\/de\/wp-json\/wp\/v2\/media\/4511"}],"wp:attachment":[{"href":"https:\/\/qilusteelgroup.com\/de\/wp-json\/wp\/v2\/media?parent=4510"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/qilusteelgroup.com\/de\/wp-json\/wp\/v2\/product_brand?post=4510"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/qilusteelgroup.com\/de\/wp-json\/wp\/v2\/product_cat?post=4510"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/qilusteelgroup.com\/de\/wp-json\/wp\/v2\/product_tag?post=4510"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}