Product Details
42CrMo Steel Specification Φ16x2500mm Cold Drawn Alloy Steel
42CrMo4 Normalized Quenched
AISI 4140 Scm440 42CrMo4 1.7225 En19 709m40 Hot Forged Alloy Round
Bar Steel
1: AISI 4140 steel introductionAISI 4140 is defined as a low alloy steel which has 1% Cr-Mo as
strengthening alloy elements.Compared with AISI 4130, it has a
higher carbon content with good balance of strength, toughness
,abrasion and impact resistance and heat treatment capabilities,but
poor in weldability characteristics.AISI 4140 is generally supplied
in quenched and tempered condition with hardness 28-32HRC
2: AISI 4140 Steel equivalentCountry | China | Japan | Germany | USA | British |
Standard | GB/T 3077 | JIS G4105 | DIN (W-Nr.) EN 10250 | AISI/ASTM ASTM A29 | BS 970 |
Grade | 42CrMo | SCM440 | 42crmo4/1.7225 | 4140 | EN19/709M40 |
3: AISI 4140 steel chemical compositionGrade | C | Si | Mn | P | S | Cr | Mo | Ni |
42CrMo | 0.38-0.45 | 0.17-0.37 | 0.5-0.80 | ≤0.035 | ≤0.035 | 0.9-1.2 | 0.15-0.25 | - |
SCM440 | 0.38-0.43 | 0.15-0.35 | 0.6-0.85 | ≤0.035 | ≤0.04 | 0.9-1.2 | 0.15-0.30 | - |
42crmo4/1.7225 | 0.38-0.45 | ≤ 0.4 | 0.6-0.9 | ≤0.025 | ≤0.035 | 0.9-1.2 | 0.15-0.30 | - |
4140 | 0.38-0.43 | 0.15-0.35 | 0.75-1.00 | ≤0.035 | ≤0.04 | 0.8-1.1 | 0.15-0.25 | - |
EN19/709M40 | 0.35-0.45 | 0.15-0.35 | 0.5-0.80 | ≤0.035 | ≤0.035 | 0.9-1.5 | 0.2-0.40 | - |
4: AISI 4140 steel mechanical properties(for guidance only)Grade | Tensile strength σb(MPa) | Yield strength σs (MPa) | Elongation δ5 (%) | Reduction ψ (%) | Impact Value Akv (J) | Hardness |
4140 | ≥1080 | ≥930 | ≥12 | ≥45 | ≥63 | 28-32HRC |
5: AISI 4140 steel overviewsSize | Round | Dia 6-1200mm |
Plate/Flat/Block | Thickness 6mm-500mm |
Width 20mm-1000mm |
Heat treatment | Normalized ; Annealed ; Quenched ; Tempered |
Surface condition | Black; Peeled; Polished; Machined; Grinded; Turned; Milled |
Delivery condition | Forged; Hot rolled; Cold drawn |
Test | Tensile strength, Yield strength, elongation, area of reduction,
impact value, hardness, grain size, ultrasonic test, US inspection,
magnetic particle testing, etc. |
Payment terms | T/T;L/C;/Money gram/ Paypal |
Trade terms | FOB; CIF; C&F; etc.. |
Delivery time | 30-45 days |
Application | AISI 4140 steel finds many applications as forgings for the
aerospace,oil and gas,automotive, agricultural and defense
industries etc. Typical applications for 4140 steel uses include:forged
gears,spindles,fixtures,jigs,collars,Axles,conveyor parts,crow
bars,logging parts,shafts,sprockets,studs,pinions,pump shafts,
rams, and ring gears etc |
6: Delivery condition
For hot forged or hot rolled bar, usually the delivery condition is
hot forged or rolled, annealed, rough turned.
For hot forged plate, usually the delivery condition is hot forged,
annealed, milled surface.
For hot rolled plate, usually the delivery condition is hot rolled,
annealed, black surface.
Company Profile
Jiangsu Mittel Steel Industrial Limited is located in Wuxi City, a
beautiful city near Shanghai. Wuxi is close to Shanghai (BAO STEEL)
,Zhangjiagang (ZPSS),Ningbo (BAO XIN),KUN SHAN (DKSS), enjoy
excellent geographic location and convenient water, land and air
transportation. , Wuxi become the biggest stainless steel sheet
,plate and coil supply Centers in China. Jiangsu Mittel Steel
Industrial Limited was established in 1998 years. as one of the
largest stockists and manufacturers of industrial grade Stainless
Steel products and derivatives in Wuxi ,We keep a stock of 50000
tons every month, so we can delivery goods in fast time.
Our company supplies cold/hot-rolled stainless steel
sheets,stainless steel coils and stainless steel Plate to many
steel factories from athome and abroad, including Shanxi Taigang
Iron& Steel CO, . Ltd (TISCO)Zhangjiagang Pohang (ZPSS),
Shanghai BAO STEEL, Ningbo Baoxin and steel factories in Taiwan
area, Mainland Chinese and foreign countries and regions.
Our long-term business lines are
201.202.304(1.4301).304L.316.316L(1.4404).430.409L, 309S
,310S(1.4845).317L.904L.S31803(1.4462).S32750.S32760, Finish: 2B,
BA, NO. 1 NO. 4, HL, 8K and so on...Meanwhile, our company is also
engaged in the long-term supply of homemade & imported medium
and thick plates, galvanized and carbon steel products.
Adhering to the principle of "quality first and customer
foremost",our company will offer long-term service to nationwide
manufacturers of household appliances, elevators, tableware,
ornaments, tanks and machines. We can offer precise frosted
wiredrawing, 8K mirror finishing and skim board oil-abrasion of
various specifications at any time. The precisely-processed
products will meet your requirements for high quality. Our company
is a modern enterprise integrating distribution and storage.
If you are interested in any of our products or would like to
discuss a custom order, please feel free to contact us. We are
looking forward to forming successful business relationships with
new clients around the world in the near future.

