SAE 4140 Steel Solid Bar
Our company supply prime quality hot rolled,cold rolled or forged steel solid bars
Steel grade: SAE4140, SAE1045, SAE1020, 42CrMo, 40Cr, 20Cr, etc
Size from 12mm to 1500mm according to different production technics.
Main steel grade and specification scope of our solid bar products
| Steel grade |
Size range |
Steel grade |
Size range |
| SAE1010 |
16mm~290mm |
35CrMo |
12mm~480mm |
| SAE 1015 |
14mm~150mm |
15CrMo |
8mm~480mm |
| SAE 1020 |
8mm~480mm |
Q355B/ST52 |
8mm~480mm |
| SAE 1045 |
6.5mm~480mm |
20CrMo |
8mm~480mm |
| 40Cr |
8mm~480mm |
65Mn |
40mm~300mm |
| 20Cr |
8mm~480mm |
GCr15/100Cr6 |
12mm~400mm |
| SAE4140/42CrMo |
12mm~480mm |
S235/Q235B |
6.5mm~180mm |
SAE4140/42CrMo related performance and parameters:
SAE4140/42CrMO steel belongs to alloy structural steel in terms of ma-terial classification, has good mechanical properties and ma-chinability, and is widely used, mainly has plate and roundbar two types of materials, its comprehensive performance isbetter than 40CR, has been recognized by the industry. Gade 4140 is a super high strength steel with high strengthand toughness, good hardenability, no obvious temper brit-tleness, high fatique limit and multi-impact resistance afterquenching and tempering treatment, good impact toughnessat low temperature. 42CrMo steel is suitable for the manufac-ture of large and medium-sized plastic molds requiring cer-tain strength and toughness.
SAE4140/42CrMO mechanical properties:
Hardness: annealed, 147 ~ 241HB, 42crmo 42crmo mechani-cal properties: tensile strength ob (MPa) : >1080(110) yieldstrength os (MPa) :2930(95) elongation 65(%): z12 sectionshrinkage w(%) : 245 impact work AKV (J-RRB- : 263 impacttoughness value aJvCM2/cm2) :>78(8) hardness: <217HB forincreasing die life to 800,000 modules or above, it can be realized by means of quenching and low temperature temper-ing for pre-hardened steel. During quenching, it preheats at500-600° C for 2-4 hours, then holds at 850-880 C for a certain period of time (at least 2 hours) , and cools in oil until50-100° C comes out and air-cooled. After quenching, thehardness can reach 50-52 HRC, in order to prevent cracking,low temperature tempering treatment at 200 ° C should becarried out immediately. After tempering, the hardness canbe kept above 48 HRC.
| Standard No. |
Alloy No. |
Chemical compositions(%) |
| C |
Si |
Mn |
S |
P |
Cr |
Ni |
Cu |
Mo |
| GB/T3077-1999 |
42CrMo |
0.38~0.45 |
0.17~0.37 |
0.50~0.80 |
≤0.035 |
≤0.035 |
0.90~1.20 |
≤0.3 |
≤0.3 |
0.15~0.25 |
| Mechanical |
Tensile Strength Mpa (min) |
Yeild Strength Mpa (min) |
Elongation % (min) |
Contraction% of area ZV(min) |
Impact toughness
AKV J (min) |
| Property |
≥1080 |
≥930 |
≥12 |
≥45 |
≥63 |
Thousands tons of common size solid bars keep in stock all the year. we guarantee very soon shipment.
The Steel Soild bar we are supplying, produced by professional and good reputation manufacturers.
Our company having been specializing in steel products since 2006, we are reliable exporter with SGS, ISO, TUV certifications.
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