RafK

04/1/2005

Odpowiednikiem stali 4130 (SAE)(US) dla rynku europejskiego jest stal 1.7218 (wg EN 10027-2: System cyfrowy – sadzę że najlepszy sposób identyfikacji), polski odpowiednik to Stal 25HM (stale do ulepszenia cieplnego i hartowania powierzchniowego). Stal ta ma słabą spawalność. Spawać można w wyjątkowych przypadkach i po wyżarzaniu zmiękczającym. Ponadto należy wstępnie nagrzewać przed spawaniem do temperatur, przy grubości:
do 15mm: 423 - 523 K (150 - 250 st C),
15-25mm: 473 - 623 K (200 - 350 st C),
25-50mm: 573 - 673 K (300 - 400 st C).
Przy spawaniu dużych elementów lub części o grubościach większych od 25 mm zaleca się stosowanie wyżarzania odprężającego. Bezpośrednio po spawaniu, przed ostygnięciem połączenia poniżej temperatury podgrzewania (powyżej) zaleca się wyżarzać zmiękczająco,odprężając lub ulepszać cieplnie.W razie braku możliwości przeprowadzenia obróbki cieplnej bezpośrednio po spawaniu połączenie należy studzić do temperatury otoczenia bardzo powoli, np. razem z piecem lub po nakryciu matami azbestowymi lub w gorącym piasku.

21/12/2004

special

fasteners

tools

stainless




Special

C100W1
Supas 45
Supas 55
070M20
070M55
150M19
605M36
16MnCr5
635M15
25CrMo4
708M40
655M13
SAE8620
822M17
31CrMoV9
722M24
817M40
Bearing Steel 100Cr6
Spring Steel 735H51
Spring Steel SAE4161










25CrMo4

Typical Applications:
A lower-carbon chrome molybdenum steel suitable for a variety of automotive and engineering applications requiring toughness and moderate tensile strength. More cold-forgeable in the softened condition than medium-carbon grades.

Forms of Supply:
Hot rolled rod in coil. Annealed and drawn wire. Bright drawn or ground bar. Annealed or heat treated.




Grade: 25CrMo4

related specifications Analysis
708H20 C 0.28
SAE4130 Mn 0.75
Cr 1.00
Mo 0.20

4130

baspaw

21/12/2004

Czy szukamy dalej?

4130

baspaw

21/12/2004

AISI 4130 Steel, normalized at 870°C (1600°F), air cooled, 13 mm (0.5 in.) round


Subcategory: AISI 4000 Series Steel; Low Alloy Steel; Medium Carbon Steel; Metal

Key Words: alloy steels, UNS G41300, AMS 6350, AMS 6356, AMS 6360, AMS 6361, AMS 6372, AMS 6370, AMS 6371, AMS 6373, ASTM A322, ASTM A331, ASTM A505, ASTM A513, ASTM A519, ASTM A646, JIS SCM 2, JIS SCCrM 1, SS14 2225 (Sweden), B.S. CDS 110 (UK), medium carbon steels, chromium-molybdenum, chrome-moly, MIL SPEC MIL-S-16974, SAE J404, SAE J412, SAE J770, DIN 1.7218, AFNOR 25 CD 4 (France), MIL-S-6758 (flat and round bar), MIS-S-18729 ANN and NORM (sheet and plate), QQS-624 (round bar)

Component Wt. %


C 0.28 - 0.33
Cr 0.8 - 1.1
Fe 97.3 - 98.22
Mn 0.4 - 0.6
Mo 0.15 - 0.25
P Max 0.035
S Max 0.04
Si 0.15 - 0.35


Material Notes:
Normalized: heated to 870°C, air cooled.

Physical Properties Metric English Comments


Density 7.85 g/cc 0.284 lb/inł

Mechanical Properties


Hardness, Brinell 217 217
Hardness, Knoop 240 240 Converted from Brinell hardness.
Hardness, Rockwell B 95 95 Converted from Brinell hardness.
Hardness, Rockwell C 17 17 Converted from Brinell hardness. Value below normal HRC range, for comparison purposes only.
Hardness, Vickers 228 228 Converted from Brinell hardness.
Tensile Strength, Ultimate 731 MPa 106000 psi
Tensile Strength, Yield 460 MPa 66700 psi
Elongation at Break 25.1 % 25.1 % in 50 mm
Reduction of Area 59.6 % 59.6 %
Modulus of Elasticity 205 GPa 29700 ksi Typical for steel
Bulk Modulus 140 GPa 20300 ksi Typical for steel
Poisson's Ratio 0.29 0.29 Calculated
Machinability 70 % 70 % annealed and cold drawn. Based on 100% machinability for AISI 1212 steel.
Shear Modulus 80 GPa 11600 ksi Typical for steel

Electrical Properties


Electrical Resistivity 2.23e-005 ohm-cm 2.23e-005 ohm-cm at 20°C (68°F), specimen hardened and tempered; 2.71E-05 Ohm-cm at 100°C (212°F); 3.42E-05 Ohm-cm at 200°C (390°F); 5.29E-05 Ohm-cm at 400°C (750°F); 7.86E-05 Ohm-cm at 600°C (1110°F); 1.103E-04 Ohm-cm at 800°C (1470°F); 1.171E-04 Ohm-cm at 1000°C (1830°F); 1.222E-04 Ohm-cm at 1200°C (2180°F)

Thermal Properties


Heat Capacity 0.477 J/g-°C 0.114 BTU/lb-°F at 50 - 100°C, 0.523 J/g°C at 150 - 200°C; 0.837 J/g°C 750 - 800°C
Thermal Conductivity 42.7 W/m-K 296 BTU-in/hr-ft˛-°F at 100°C; 40.7 W/m-°C at 300°C; 30.1 W/m°C at 1200°C


References for this datasheet.


Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistant format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's disclaimer and terms of use regarding this information. MatWeb data and tools provided by MatWeb.com, a product of Automation Creations, Inc.

4130

baspaw

21/12/2004

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FLEXOR® Steel – The superior substitute for most alloy steels such as 4140, 8620, 6150, 4340, 4130, 4150 and even H-13 tool steel.

Why is it Superior?

Better Mechanical Properties

Excellent Machinability even in higher hardnesses

FLEXOR® Hardness Ranges can be tailored to your needs

Alloy Symbol type 8620 6150 4140 06 01 FLEXOR®
Non-Carburizing Steels


*These SAE grades exhibit high distortion during quench process.

C Carbon .20 .50 .40 1.45 .90 .34
Cr Chromium .50 .90 .90 -- .50 .80
Mo Molybdenum .20 -- .20 .25 -- .50
V Vanadium -- .15 -- -- -- --
W Tungsten -- -- -- -- .50 .50
NI Nickel .50 -- -- -- -- --
Mn Manganese .75 .75 .75 .50 1.00 .75
SI Silicon .30 .30 .30 1.00 .30 .30
______ ______ ______ ______ ______ ______
Total Alloy 2.45 2.60 2.55 3.20 3.20 3.29
Total % Carbide
Forming Alloy .70% 1.05% 1.10% .25% 1.00% 1.90%


FLEXOR® is unique steel which is neither an alloy steel nor a tool steel, though it is often classified as both. FLEXOR® is extremely versatile due to its unique chemistry and composition. This versatility in heat treatment allows for a wide range of physical properties. These properties include higher core hardness, better machinability especially at higher hardnesses, and dual properties when carburized.

A higher core hardness means a more uniform hardness through any cross section. The more uniform hardness along with a fine grain structure yields a higher fatigue and tensile strength for difficult applications.

The unique FLEXOR® chemistry allows you better machineability. FLEXOR® can be supplied at pre-hardened higher hardnesses while maintaining excellent machinability.

When FLEXOR® is carburized, it will yield dual properties not achievable with any other grades for high strength, high strength, and high wear resistant surface.

The carburized case is more highly alloyed than oil hardening tool steel and it will yield better wear resistance than any carburizing grade of steel such as 8620. The carbide forming alloys of Chromium, Molybdenum, and Tungsten produce harder complex carbides with more wear resistance. FLEXOR® also exhibits nearly twice the carbide forming alloy as SAE 4140 and SAE 6150. This means better wear properties given the same surface hardness as well as less distortion through heat treatment. Consult your Pennsylvania Steel rep for optimal heat treatment techniques and properties.

The addition of the Tungsten Alloy helps to limit grain growth during heat treatment. Higher alloy content allows heat treatment with less distortion.







Do not torch straighten carburized section. Straighten after preheating to 3000 F to 4000 F.

Do not flame harden over quenched and tempered base. Flame hardening over 30 R/C is quite acceptable; the resultant part is tough, with good wear characteristics on the surface.

Never harden FLEXOR® from a temperature less than 15250 F , unless underhardened core is desired. This technique is to reduce distortion and ease in straightening. (Note: underhardening is used only when wear is of primary concern.)

Temper all sections a minimum of 5000 for toughness. Lower temperatures are recommended only for applications where abrasion and wear are of primary concern.

Please call our steel experts to discuss your unique application.






Pennsylvania Steel Corporation
12380 Beech Daly Rd.
Detroit, MI (Michigan) 48239 Since 1948
Phone: (313) 937-3970
Fax: (313) 937-0228
E-mail: info@pennsylvaniasteel.com

FLEXOR® Steel – Superior Substitute for Most Alloy Steels such as 4140 Steel, 8620 Steel, 6150 Steel, 4340 Steel, 4130 Steel, 4150 Steel and Even H-13 Tool Steel

© 2004 Pennsylvania Steel Corporation. All rights reserved.

poszukaj

deGUPi

21/12/2004

Cze moim zdaniem nie podałeś całkowitego oznaczenia tej stali, ale poszukaj po oznaczeniu - 25CrMo 4 F (w-no 1.72.14)
Naraa

sae4130

baspaw

18/12/2004

proponuję w GOOGLE wpisać hasło sae 4130