BS 708M40 Alloy Hot Rolled Steel Round Bar Size 10-350mm Length As Your Request
Brand Name:Unite Steel
Certification:ISO/MTC/SGS/BV
Model Number:Round bar
Minimum Order Quantity:MOQ:2-3 Ton
Delivery Time:Within 15-45 days
Payment Terms:L/C, D/A, D/P, T/T, Western Union, MoneyGram
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Shanghai Shanghai China
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Room 1109, Loft Office, Green Land International Plaza, No. 275-8 Guoding East Road, Shanghai 200433, P.R. China. (admin(a)shunitesteel.com)
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BS 708M40 Alloy Hot Rolled Steel Round Bar Size 10-350mm Length As Your Request
1. RELATED SPECIFICATIONS:
USA :AISI 4140 / ASTM A29/A29M-91 4140 / ASTM A322 4140 / ASTM A331 4140 (cold finish) / SAE 4140
JAPAN :JIS G 4103 SNCM4 / JIS G 4105 SCM4 / JIS G 4105 SCM440
GERMANY :DIN 17212 W.Nr. 1.7223 Type 41CrMo4 / DIN17200-1654 W.Nr 1.7225 Type 42CrMo4
GREAT BRITAIN:BS970 - 1955 EN19A / BS970 Part 3:1991 709M40
AUSTRALIA :AS 1444-2007 - 4140
2. DESCRIPTION:
AISI 4140 is a medium carbon, chromium and molybdenum alloy steel.
The normal condition is hardened
and tempered to a range of 850 to 1000 Mpa ultimate tensile
strength for bar sizes up to 220mm
diameter. Limited ruling sections may apply according to Australian
Standards
3. APPLICATIONS:
AISI 4140 is an ideal general purpose high tensile constructional
steel ready for use after machining. It is
used for shafts, axles, studs & bolts, large gears and light
duty form rolls. The steel is suitable for
induction or flame hardening.
4. TYPICAL CHEMICAL ANALYSIS:
BS 708M40 ALLOY STEEL ROUND BAR
| Carbon | Silicon | Manganese | Chromium | Nickel | Molybdenum | Phosphorus | Sulfur |
| 0.38-0.45 | 0.17-0.37 | 0.50-0.80 | 0.90-1.20 | / | 0.15-0.25 | 0.035 max | 0.035 max |
Note:The figures are based on the data of 42CrMo, according to Chinese Standard GB-T 699-1999
Chemical compositions can be adjusted as your requirements with a MOQ of 300MTs.
5. HEAT TREATMENT CONDITION AND MECHANICAL PROPERTIES:
BS 708M40 ALLOY STEEL ROUND BAR
| Heat Treatment | Mechanical Properties | Hardness | ||||||
| Normalizing | Quenching | Tempering | Tensile Strength (Mpa) | Yield Point (Mpa) | Elongation (%) | Reduction of are (%) | Impact Absorbing Energy (J) | Before Heat Treatment (HB) |
| Celsius Degree | MIN | MAX | ||||||
| / | 850 | 550 | 1080 | 930 | 12 | 45 | 63 | 217 |
6. SIZE RANGE:
Diameter:10-350mm
Length:200-1300mm(cut as your requirement)
PACKAGE AND DELIVERY:
Seaworthy package or as your requirments;
10-25 days after confirmed.
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.
MARKING :
Heat no will be cold stamped and steel grade, diameter (mm)length(mm) and the manufacture Logo and weight(KG) is painted.
BS 708M40 Alloy Hot Rolled Steel Round Bar Size 10-350mm Length As Your Request
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