Question 1

What sizes of AISI 4140 / 42CrMo4 do you stock in Dubai?

Accepted Answer

We hold AISI 4140 / 42CrMo4 in the following forms and size ranges — Round Bars: 16 - 800 mm dia, forged or peeled, Plates: 10 - 200 mm thk, Blocks & Profiles: Cut blocks to size. Cut-to-size, profiling and kitting are available on request, and anything outside the stock range is sourced direct from the mill.

Question 2

What are the equivalent grades to AISI 4140 / 42CrMo4?

Accepted Answer

AISI 4140 / 42CrMo4 is commonly cross-referenced with 1.7225, 42CrMo4, SCM440, 709M40. Equivalents are nominal: send us the property that matters for your application and we will confirm the closest grade we can certify.

Question 3

Is AISI 4140 / 42CrMo4 supplied with mill certification?

Accepted Answer

Yes. Every delivery of AISI 4140 / 42CrMo4 is supplied against ASTM A29, EN 10083-3 with EN 10204 3.1 mill certification and full heat-number traceability. Third-party inspection can be arranged on request.

Question 4

What is AISI 4140 / 42CrMo4 typically used for?

Accepted Answer

AISI 4140 / 42CrMo4 is specified for drive shafts and axles, gears and couplings, drill collars and tool joints, mainly in Oil & Gas, General Engineering, Mining. Tell us the duty and we will advise whether AISI 4140 / 42CrMo4 or another alloy steel grade is the better fit.

الشكل	نطاق المقاسات
القضبان الدائرية	16 - 800 mm dia, forged or peeled
الألواح	10 - 200 mm thk
الكتل والمقاطع	Cut blocks to size

العنصر	الحد الأدنى	الحد الأقصى
C	0.38	0.43
Cr	0.80	1.10
Mo	0.15	0.25
Mn	0.75	1.00

الخاصية	القيمة	الوحدة
Yield Strength (Q+T)	650 - 900	MPa
Tensile Strength (Q+T)	900 - 1100	MPa
Elongation	12 min	%
Hardness (Q+T)	280 - 320	HBW

AISI 4140 / 42CrMo4

الأشكال والمقاسات المتوفرة

التركيب الكيميائي (%)

الخصائص الميكانيكية

الخصائص الفيزيائية

التطبيقات النموذجية

أسئلة متكررة

AISI 4340 / 34CrNiMo6