Soğuk çekilmiş ISLAH ÇELİKLERİ

ISLAH ÇELİĞİ NEDİR?

Islah çelikleri, kimyasal bileşimleri özellikle karbon miktarı bakımından, sertleştirilmeye elverişli olan ve ıslah işlemi sonunda belirli bir çekme dayanımında yüksek tokluk özelliği gösteren, alaşımsız ve alaşımlı makine imalat çelikleridir.

Islah işlemi, sonuçta çelik parçaya yüksek tokluk özelliğinin kazandırılacağı, önce bir sertleştirme ve arkasından menevişleme işlemlerinin bütünü olarak tarif edilir. Islah çelikleri, ıslah işlemi sonunda kazandıkları üstün mekanik 

özelliklerinden dolayı, çeşitli makina ve motor parçaları, dövme parçaları, çeşitli cıvata, somun ve saplamalar, krank milleri, akslar, kumanda ve tahrik parçaları, piston kolları, çeşitli miller, dişliler gibi parçaların imalinde olmak üzere geniş bir alanda kullanılırlar.
KİMYASAL ANALİZLER / CHEMICAL ANALYSIS
Kısa işaretli Malz. No. C Si Mn P(max) S(max) Cr Mo Ni V
Designation Mat. No.                  
C 22 1.0402 0.18   0.3   0.035        
Ck 22 1.1151 0.25 0.40 0.6 0.035 0.020-0.040        
C 35 1.0501       0.045 0.045        
Cm 35 1.1180 0.32   0.50   0.020-0.035        
Ck 35 1.1181 0.39 0.40 0.80 0.035 0.035        
C 45 1.0503       0.045 0.045        
Cm 45 1.1201 0.42   0.50   0.020-0.035        
Ck 45 1.1191 0.50 0.40 0.80 0.035 0.035        
C 55 1.0535       0.045 0.045        
Cm 55 1.1209 0.52   0.60   0.020-0.035        
Ck 55 1.1203 0.60 0.40 0.90 0.035 0.035        
C 60 1.0601       0.045 0.045        
Cm 60 1.1223 0.42   0.50   0.020-0.035        
Ck 60 1.1221 0.50 0.40 0.80 0.035 0.035        
40 Mn 4 1.5038 0.42   0.50            
    0.50 0.40 0.80 0.035 0.035        
28 Mn 6 1.5065 0.25   1.30            
    0.32 0.40 1.65 0.035 0.035        
38 Cr 2 1.7003 0.34   1.50     0.40      
    0.41 0.40 1.60 0.035 0.035 0.60      
46 Cr 2 1.7006 0.42   0.50     0.40      
    0.50 0.40 0.80 0.035 0.035 0.60      
34 Cr 4 1.7033 0.30   0.60   0.035 0.90      
34 CrS 4 1.7037 0.37 0.40 0.90 0.035 0.020-0.040 1.20      
37 Cr 4 1.7034 0.34   0.60   0.035 0.90      
37 CrS 4 1.7038 0.41 0.40 0.90 0.035 0.020-0.040 1.20      
41 Cr 4 1.7035 0.38   0.50   0.035 0.90      
41 CrS 4 1.7039 0.45 0.40 0.80 0.035 0.020-0.040 1.20      
25 CrMo 4 1.7218 0.22   0.50     0.90 0.15    
    0.29 0.40 0.80 0.035 0.035 1.20 0.30    
34 CrMo 4 1.7220 0.30   0.50   0.035 0.90 0.15    
34 CrMoS 4 1.7226 0.37 0.40 0.80 0.035 0.020-0.040 1.20 0.30    
42 CrMo 4 1.7225 0.38   0.50   0.035 0.90 0.15    
42 CrMoS 4 1.7227 0.45 0.40 0.80 0.035 0.020-0.035 1.20 0.30    
50 CrMo 4 1.7228 0.46   0.50     0.90 0.15    
    0.54 0.40 0.80 0.035 0.035 1.20 0.30    
32 CrMo 12 1.7361 0.28   0.40     2.80 0.30 0.30  
    0.35 0.40 0.70 0.035 0.035 3.30 0.50    
36 CrNiMo 4 1.6511 0.32   0.50     0.90 0.15 0.90  
    0.40 0.40 0.80 0.035 0.035 1.20 0.30 1.20  
34 CrNiMo 6 1.6582 0.30   0.40     1.40 0.15 0.40  
    0.80 0.40 0.70 0.035 0.035 1.70 0.30 1.70  
30 CrNiMo 8 1.6580 0.26   0.30     1.80      
    0.33 0.40 0.60 0.035 0.035 2.20      
50 CrV 4 1.8159 0.47   0.70     0.90     0.10
    0.55 0.40 1.10 0.035 0.035 1.20     0.20
30 CrMoV 9 1.7707 0.26   0.40     2.30 0.15   0.10
    0.34 0.40 0.70 0.035 0.035 2.70 0.25   0.20
KARŞILAŞTIRMA TABLOSU / TABLE OF EQUIVALENT GRADES
Kısa İşaretli Malzeme No.          
Designation Material No. SAE/AISI BS (En) AFNOR UNI JIS
C 22 1.0402 1020 050 A 20 XC 25    
Ck 22 1.1151 1022 (3 A, 3 C)   C 20  
C 35 1.0501   060 A 35 (8A) XC 38   S 22 C
Cm 35 1.1180 1035 080 A 35   C 35  
Ck 35 1.1181          
C 45 1.0503     XC45    
Cm 45 1.1201 1045 080 M 46   C 45 S 35 C
Ck 45 1.1191          
C 55 1.0535          
Cm 55 1.1209 1055 070 M 55 XC 55 C 55 S 45 C
Ck 55 1.1203          
C 60 1.0601   080 A 62      
Cm 60 1.1223 1060 (43D) XC 60 C 60  
Ck 60 1.1221          
40 Mn 4 1.5038 1039 150 M 36 35 M 5   S 55 C
             
28 Mn 6 1.5065 1330 150 M 28 20 M 25 C 28 Mn S 60 C
             
38 Cr 2 1.7003     38 C 2 38 Cr 2  
             
46 Cr 2 1.7006 5045   45 C 2 45Cr 2  
             
34 Cr 4 1.7033 5132 530 A 32 32 C 4 34 Cr 4  
34 CrS 4 1.7037   (18 B)   (KB)  
37 Cr 4 1.7034 5135 530 A 36 38 C 4 36 Cr Mn 4  
37 CrS 4 1.7038   (18C)   38 Cr 4  
41 Cr 4 1.7035 5140 530 M 40 42 C 4 41 Cr 4 SCR 430 H
41 CrS 4 1.7039   (18 D)      
25 CrMo 4 1.7218 4130 1717 CSD 25 CD 4 25 CrMo 4 SCR 435 H
      110   (ICB)  
34 CrMo 4 1.7220 4135 708 A 37 35 CD 4 35 CrMo 4 SCR 440 H
34 CrMoS 4 1.7226   (19B)      
42 CrMo 4 1.7225 4140 708 M 40 42 CD 4 42 CrMo 4 SCM 430
42 CrMoS 4 1.7227   (19C)      
50 CrMo 4 1.7228 4150       SCM 432
             
32 CrMo 12 1.7361   722 M 24 30 CD 12 32 CrMo 12 SCM 440
             
36 CrNiMo 4 1.6511 9840 816 M 40 40 NCD 3 38 NiCrMo 4 SCM 445 (H)
          (KB)  
34 CrNiMo 6 1.6582 4340 817 M 40 35 NCD 6 35 NiCrMo 6  
      (110)   (KB)  
30 CrNiMo 8 1.6580   823 M 30 30 NCD 8 30 NiCrMo 8 SNCM 447
             
50 CrV 4 18159 6150 735 A 50 50 CV 4 50CrV 4 SNCM 431
      (47)      
30 CrMoV 9 1.7707         SUP 10
Toleranslar /Permissible Deviations
YUVARLAKLAR / ROUNDS  
   
ÇAP / DIAMETER        TOLERANSLAR / TERMISSIBLE DEVIATIONS
MM h7 h8 h9 h10 h11  
               
1 3 0 / -0.010 0 / -0.014 0 / -0.025 0 / -0.040 0 / -0.060  
3.5 6.0 0 / -0.012 0 / -0.018 0 / -0.030 0 / -0.048 0 / -0.075  
6.5 10.0 0 / -0.015 0 / -0.022 0 / -0.036 0 / -0.058 0 / -0.090  
11.0 18.0 0 / -0.018 0 / -0.027 0 / -0.043 0 / -0.070 0 / -0.110  
19.0 25.0 0 / -0.021 0 / -0.033 0 / -0.052 0 / -0.084 0 / -0.130  
26.0 30.0 0 / -0.021 0 / -0.033 0 / -0.052 0 / -0.084 0 / -0.130  
32.0 50.0 0 / -0.025 0 / -0.039 0 / -0.062 0 / -0.100 0 / -0.160  
52.0 80.0 0 / -0.030 0 / -0.046 0 / -0.074 0 / -0.120 0 / -0.190  
85.0 120.0 0 / -0.035 0 / -0.054 0 / -0.087 0 / -0.140 0 / -0.220  
125.0 150.0 0 / -0.040 0 / -0.063 0 / -0.100 0 / -0.160 0 / -0.250  
               
ALTIKÖŞELER / HEXAGONALS  
   
EBAT / SIZE            
MM                      TOLERANSLAR / TERMISSIBLE DEVIATIONS
               
1.5 3   0 / -0.060   h11  
3.2 6.0   0 / -0.075   h11  
7.0 10.0   0 / -0.090   h11  
11.0 17.0   0 / -0.110   h11  
19.0 30.0   0 / -0.130   h11  
32.0 50.0   0 / -0.160   h11  
55.0 65.0   0 / -0.190   h11  
70.0 80.0   0 / -0.300   h12  
85.0 100.0   0 / -0.350   h12  
               
KARELER / SQUARES  
   
EBAT / SIZE            
MM                  TOLERANSLAR / TERMISSIBLE DEVIATIONS  
               
2.0 3.0   0 / -0.060   h11  
3.5 6.0   0 / -0.075   h11  
7.0 10.0   0 / -0.090   h11  
11.0 18.0   0 / -0.110   h11  
19.0 30.0   0 / -0.130   h11  
32.0 55.0   0 / -0.160   h11  
60.0 65.0   0 / -0.190   h11  
70.0 80.0   0 / -0.300   h12  
100.0     0 / -0.350   h12