China Cold Drawn 4140 4142 Bar 4140 Cold Drawn Steel Bars 4140 Cold Drawn Bar

Cold Drawn 4140 & 4142 Bar / 4140 Cold drawn steel bars / 4140 cold drawn bar
1.Sizes

ProcessSize offer range (inches)Size offer range (mm)Cold DrawingRound Sizes0.235 - 4.700″5-120Hexagon Sizes0.235 - 3.000″5-75Square Sizes0.235 - 4.700″5-120Special SectionsPlease RFQPlease RFQAnnual Capacity30,000 Tons30,000 TonsTurning & PolishingSizes0.600-4.700''15-120Annual Capacity50,000 Tons50,000 Tons

2.Applications of 4140 cold drawn steel bars
CD 4140 / 4142 alloy bar's chromium content provides good hardness penetration, and the molybdenum imparts uniformity of hardness and high strength. This alloy responds well to heat treatment. In the annealed condition it machines at 110 sfm. It also has good wear resistance, toughness, and good ductility in the quenched and tempered condition. This grade can also be supplied as turned ground and polished for tighter dimensional tolerances for bearing fitting applications.
Typical applications are highly stressed parts or parts subject to severe wear.
3.Chemical composition

ASTM A29/29MCSiMnCrMoPS41400.38~0.430.15~0.350.75~1.000.80~1.100.15~0.25≤0.035≤0.040DIN WN-rCSiMnCrMoPS1.72250.38~0.45 ≤0.400.60~0.900.90~1.200.15~0.30≤0.035≤0.035GB/TCSiMnCrMoPS42CrMo0.38~0.450.17~0.370.50~0.800.90~1.200.15~0.25≤0.030≤0.030BSCSiMnCrMoPS708M400.36~0.440.10~0.350.70~1.000.90~1.200.15~0.25≤0.035≤0.035JISCSiMnCrMoPSSCM4400.38~0.430.15~0.350.60~0.850.90~1.200.15~0.30≤0.030≤0.030

4.Properties
TYPICAL MECHANICAL PROPERTIES FOR ANNEALED

Tensile Strength ksi

105 - 120

Yield Strength

85k - 95k

Elongation in 2"

15% - 25%

Reduction of area

45% - 55%

Brinelle Hardness

215-235

TYPICAL MECHANICAL PROPERTIES FOR HEAT TREATED

Tensile Strength ksi

130

Yield Strength

110

Elongation in 2"

16%

Reduction of area

50%

Brinelle Hardness

269-321

5.Tolerances:

NOMINAL SIZE DIAMETER mmh9h10h111 to 3-0.025-0.04-0.06(-0.00098")(-0.00158")(-0.00236")Over 3 to 6-0.03-0.048-0.075(-0.00118")(-0.00189")(-0.00295")Over 6 to 10-0.036-0.058-0.09(-0.00142")(-0.00228")(-0.00354")Over 10 to 18-0.043-0.07-0.11(-0.00169")(-0.00275")(-0.00433")Over 18 to 30-0.052-0.084-0.13(-0.00205")(-0.00331")(-0.00512")Over 30 to 50-0.062-0.1-0.16(-0.00244")(-0.00393")(-0.00630")Over 50 to 80-0.074-0.12-0.19(-0.00291")(-0.00472")(-0.00748")Over 80 to 120-0.087-0.14-0.22(-0.00343")(-0.00551")(-0.00866")

6.Payment term: LC, TT
7.Delivery time : 7-15 days for stocks, and one month for new production.
8.MOQ:2tons
9.Our cold drawn bar surface
Our cold drawn bar factory
Equipments including shot blasting machine, cold drawn machine, annealing machine,Q&T machine, straighten machine, peeling machine, and full set of inspection machines.
Packing and Delivery
Surface :anti-rust oil
Bundle weight:usually 1 ton per bundle, also canbe according to your requirements.
Packed by plastic firm and vooven cloth.