SHANGHAI UNITE STEEL
One-stop Brand Service Provider For Globle Machinery And Petrochemical Enterprise And Special Steel Distributor.
Add to Cart
EN19A Case Hardened Alloy Steel Round Bar Delivery Condition Quenched And Tempered
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:
HOT ROLLED BS EN19A 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:
HOT ROLLED BS EN19A 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:10-300mm
Length:200-1300mm(cut as your requirement)
7. 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.
8. MARKING :
Heat no will be cold stamped and steel grade, diameter (mm)length(mm) and the manufacture Logo and weight(KG) is painted.
9. PACKAGE AND DELIVERY:
Seaworthy package or as your requirments;
10-25 days after confirmed.