About Us
Factory Tour
Quality Control
Contact Us
Request A Quote
Home ProductsCold Finished Bar

4140 / 42CrMo4 / SCM440 Cold Drawn Bar , Cold Finished Steel Bar Profile

China SHANGHAI UNITE STEEL certification
China SHANGHAI UNITE STEEL certification
I'm Online Chat Now

4140 / 42CrMo4 / SCM440 Cold Drawn Bar , Cold Finished Steel Bar Profile

small.img.alt small.img.alt

Large Image :  4140 / 42CrMo4 / SCM440 Cold Drawn Bar , Cold Finished Steel Bar Profile

Product Details:
Place of Origin: China
Brand Name: UST
Certification: ISO 9001
Model Number: Shape, Round, Square, Hex, Flat and Irregular
Payment & Shipping Terms:
Minimum Order Quantity: MOQ: 1-3 ton
Price: USD 660- 1100/ton
Packaging Details: Plastic plugs in both ends, Hexagonal bundles of max 2,000kg with several steel strips, Two tags on each bundle, Wrapped in waterproof paper, PVC sleeve, and sackcloth with several steel strips.
Delivery Time: Within 5-35 days
Supply Ability: 1500 ton/month
Detailed Product Description
Quality Standard: AISI, ASTM, BS, DIN, GB, JIS Application: Structural Steel Bar
Shape: Shape, Round, Square, Hex, Flat And Irregular Tolerance: H9,H10, H11,H12
Skype: Erichuang20111
High Light:

old finished steel bar


flat steel bar


4140 / 42CrMo4 / SCM440 Cold Drawn Bar , Cold Finished Steel Bar Profile



Cold Drawn steel round bar are widely used in machinery making, autombile making, railway, mine machinery, petoleum machinry, agricultural machinery and civil archtectue such as all kinds of shafts, screws, connecting rods, hardware tools, gears, standard parts, spanners fasteners, structural parts for automobile and agricultural machinery, outer and iner sleeves, rollers and balls for bearing making.


Related specification:

Australia AS 1444-2007 4140

AMS 6378, AMS 6379 , AMS 6381B , AMS 6382 , AMS 6382G , AMS 6390 , AMS 6390A , AMS 6395

Germany DIN 17212 W.Nr. 1.7223 Type 41CrMo4

DIN 17200 1654 W.Nr 1.7225 Type 42CrMo4

DIN 17200 W.Nr 1.7227 Type CrMoS4

EN10083 11991 1.7225 42CrMo4

Great Britain BS970 1955 EN19A

BS970 Part 3:1991708M40 or 709M40 or 708 A 42

Sweden: SS 2244

France AFNOR 40 CD 4 , AFNOR 42 CD 4

Italy: UNI 38 CrMo 4 KB , UNI 40 CrMo 4 , UNI G 40 CrMo 4

USA ASTM A29A29M91 4140

ASTM A322 4140

SAE 4140, SAE J404 , SAE J412 , SAE J770 , UNS G41400

JIS G 4105 SCM440


Chemical composition:

Grade C Mn Si Cr Mo S P
SAE4140 0.38-0.43 0.75-1.0 0.15-0.35 0.8-1.1 0.15-0.25 ≤0.040 ≤0.035
42CrMo4 0.38-0.45 0.6-0.9 ≤0.4 0.9-1.2 0.15-0.25 ≤0.035 ≤0.035


Do you have these Difficulties?

Difficulties a material that is difficult to shape or form
not to invest capital to replace worn out machines, retool machines or add capacity
using equipment infrequently and can't justify the expense
benefit from the reduced machining associated with near net shapes
buying from machine shops and find the cost expensive
lack the skilled labor to produce precision, high-quality parts or who can't find skilled craftsmen

If yes,please use Precision Cold Drawn Products.


Tolerance and roughness

Size Standard Tolerance(inches) Special Tolerance(inches) Min.Corner Radii(inches) Max.Surf.Roughness
0.125-0.4375 0.002'' 0.001'' 0.015'' 63Ra
0.4375-0.75 0.003'' 0.0015'' 0.03'' 90Ra
0.75-1.5 0.003'' 0.0015'' 0.03'' 125Ra
1.5-2.5 0.004'' 0.002'' 0.03'' 125Ra
2.5-3.0 0.005'' 0.0025'' 0.03'' 125Ra
3.0-4.0 0.006'' 0.003'' 0.03'' 125Ra


Certificate of Quality: issued in English, in addition the normal terms, production process, the mechanical property yield strength, tensile strength, elongation and hardness, forged ratio, UT test result, Grain size, heat treatment methods and the sample of is shown on the Certificate of Quality.


Packing: Plastic reel shaft, and bound, iron wire frame, the paper barrel etc
4140 / 42CrMo4 / SCM440 Cold Drawn Bar , Cold Finished Steel Bar Profile 0


Please feel free to contact us again if you have any further questions. We look forward to receiving an order from you.

Contact Details

Contact Person: Neya

Tel: +8615261689453

Send your inquiry directly to us (0 / 3000)