Heat Treatment
The backbone for Steel Bar
STRENGTH & DURABILITY
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With Paradise Steel
Forging Ingot Bars
Size Range 250mm
350mm
500mm
(All in Round)		 20 to 80mm Round
Supply Condition As Cast As Rolled, Annealed, Normalized Tempered
Product and Key Grades
Black Bars (Rounds)
Stainless Steel SS 409, SS 410, SS 416, SS 420B, SS 420C, SS 422, SS 430, SS 431, SS 440B, SS 440C
Carbon Steel S25C, S45C, S48C, S53C, EN8, EN8D, EN9, EN15, EN31, SAE 1035, SAE 1050, C45, CK45, CK55, CK75
Alloy Steel SCM 415H, SCM 420H, SCM 435H, SCR 420H, 16MnCr5, 20MnCr5, 41Cr4, EN 18, SAE 4140, SAE 4130, SAE 5130, SAE 8620, EN 24, EN 353, 42CrMo4, EN 19,F22
Spring Steel EN 42, EN 43, EN 45, EN 45A, EN 47 : V : 0.15, CS 70, CS 80, CS 95 and All High Strength Spring Steel
Bearing Steel SAE 52100, 100Cr6, 100CrMnSi6, SUJ2, S53CG
Valve Steel EN 52, SUH 11, SUH 3, 21-4N
Tool Steel D2, D3, S2, S7, H11, H12, H13
Product and Key Grades
Stainless Steel
Grade C Si Mn P S Cr Ni Mo V W
SS 409 0.08 1 1 0.045 0.045 10.5-11.74 0.5
SS 410 0.15 1 1 0.04 0.03 11.5-13.5 0.75
SS 416 0.15 1 1.25 0.06 0.15 12-14
SS 420B 0.26-0.35 1 1 0.04 0.03 12-14
SS 420C 0.43-0.50 1 1 0.04 0.03 12.5-14.5
SS 422 0.20-0.25 1 1 0.04 0.03 11-13.5 0.50-1 0.75-1.25 0.20-0.50 0.75-1.25
SS 430 0.12-0.17 1 1 0.045 0.03 16-18 0.5
SS 431 0.12-0.20 1 1 0.04 0.03 15-18 1.25-3
SS 440A 0.60-0.75 1 1 0.04 0.03 16-18 1 0.75
SS 440B 0.75-0.95 1 1 0.04 0.03 16-18 1 0.75
SS 440C 0.95-1.20 1 1 0.04 0.03 16-18 1 0.75
Carbon Steel
Grade C Si Mn P S Cr Ni
EN 8 0.36-0.44 0.10-0.40 0.60-1 0.05 0.05
EN 9 0.50-0.60 0.4 0.50-0.80 0.035 0.035 0.3
EN 15 0.30-0.40 0.10-0.35 1.3-1.7 0.04 0.04 0.75-1.25
EN 31 0.90-1.20 0.10-0.35 0.30-0.75 0.04 0.04 1-1.60
EN 36 0.12-0.18 0.10-0.35 0.30-0.60 0.04 0.04 0.60-1.10 3-3.75
SAE 1035 0.30-0.40 0.15-0.35 0.60-0.90 0.04 0.04
C45 0.42-0.50 0.15-0.40 0.50-0.80 0.045 0.045
S53C 0.50-0.56 0.15-0.35 0.60-0.90 0.03 0.035 0.2
Alloy Steel
Grade C Si Mn P S Cr Ni Mo
16MnCr5 0.14-0.19 0.4 1-1.3 0.025 0.035 0.8-1.10
20MnCr5 0.17-0.22 0.4 1.1-1.4 0.035 0.035 1-1.30
41Cr4 0.38-0.45 0.4 0.60-0.90 0.035 0.035 0.90-1.20
42CrMo4 0.38-0.45 0.17-0.35 0.50-0.80 0.035 0.04 0.90-1.20 0.15-0.25
EN 19 0.35-0.45 0.15-0.35 0.50-0.80 0.035 0.04 0.90-1.50 0.20-0.40
F22 0.15 0.5 0.30-0.60 0.04 0.04 2-2.5 0.87-1.13
EN 24 0.35-0.45 0.10-0.35 0.40-0.70 0.04 0.04 0.90-1.40 1.30-1.80 0.20-0.35
EN 353 0.10-0.20 0.10-0.35 0.50-1 0.04 0.04 0.75-1.25 0.08-0.15 1-1.50
SAE 8620 0.18-0.23 0.20-0.35 0.70-0.90 0.04 0.04 0.40-0.70 0.40-0.70 0.15-0.25
SAE 4130 0.28-0.33 0.4 0.40-0.60 0.035 0.04 0.80-1.10 0.15-0.25
SAE 4140 0.38-0.43 0.15-0.35 0.75-1 0.035 0.04 0.80-1.10 0.15-0.25
SCM-415H 0.12-0.18 0.15-0.35 0.55-0.95 0.03 0.03 0.85-1.25 0.25 0.15-0.30
SCM-420H 0.17-0.23 0.15-0.35 0.55-0.95 0.03 0.03 0.85-1.25 0.25 0.15-0.30
SCM-435H 0.32-0.39 0.15-0.35 0.55-0.95 0.03 0.03 0.85-1.25 0.25 0.15-0.35
Spring Steel
Grade C Si Mn P S Cr V
EN 42 0.70-0.85 0.10-0.40 0.55-0.75 0.04 0.04
EN 43 0.45-0.60 0.10-0.40 0.60-0.80 0.035 0.035
EN 45 0.50-0.60 1.50-2 0.70-1 0.04 0.04
EN 45A 0.55-0.65 1.70-2 0.70-1 0.04 0.04
EN 47 0.45-0.55 0.5 0.50-0.80 0.04 0.04 0.80-1.20 0.15
CS 70 0.65-0.75 0.15-0.35 0.50-0.90 0.04 0.04
CS 80 0.75-0.85 0.15-0.35 0.50-0.90 0.04 0.04
CS 95 0.90-1 0.15-0.35 0.30-0.60 0.04 0.04
Bearing Steel
Grade C Si Mn P S Cr Ni Mo
SAE 52100 0.93-1.05 0.15-0.35 0.25-0.45 0.025 0.025 1.35-1.60 0.25 0.1
EN 31 0.95-1.20 0.15-0.35 0.40-0.75 0.035 0.035 1.20-1.60
100Cr6 0.90-1.05 0.15-0.35 0.25-0.45 0.03 0.025 1.35-1.65 0.3
100CrMnSi6 0.93-1.05 0.45-0.75 1-1.20 0.025 0.03 1.40-1.65 0.1
SUJ2 0.95-1.10 0.15-0.35 0.5 0.025 0.025 1.30-1.60
Valve Steel
Grade C Si Mn P S Cr Ni Mo N W Ti Cu
EN 52 0.40-0.50 2.70-3.30 0.6 0.04 0.03 8-10 0.5
21-2N 0.50-0.60 0.25 7-10 0.045 0.03 19.50-21.5 1.50-2.75 0.20-0.40
21-4N 0.48-0.58 0.25 8-10 0.045 0.03 20-22 3.25-4.50 0.35-0.50
21-12N 0.15-0.25 0.70-1.25 1.5 0.05 0.03 20-22 10.5-12.5 0.15-0.25
23-8N 0.28-0.38 0.50-1 1.50-3.50 0.045 0.03 22-24 7-9 0.5 0.25-0.35 0.5
SUH 3 0.35-0.45 1.80-2.50 0.6 0.03 0.03 10-12 0.6 0.7-1.30 0.3
SUH 11 0.45-0.55 1-2 0.6 0.03 0.03 7.5-9.5 0.6
Tool Steel
Grade C Si Mn P S Cr Ni Mo V W
H11 0.35-0.45 0.80-1.25 0.20-0.60 0.03 0.03 4.75-5.50 1.10-1.60 0.30-0.60
H12 0.30-0.40 0.80-1.25 0.20-0.60 0.03 0.03 4.75-5.50 1.25-1.75 0.20-0.50 1-1.70
H13 0.32-0.45 0.8-1.25 0.2-0.6 0.03 0.03 4.75-5.50 1.10-1.75 0.80-1.20
S1 0.40-0.55 0.15-0.20 0.10-0.40 0.03 0.03 1-1.80 0.3 0.5 0.15-0.30 1.50-3
S2 0.40-0.55 0.90-1.20 0.30-0.50 0.03 0.03 0.3 0.30-0.60 0.5
S3 0.5 2 0.03 0.03 0.74 1
S4 0.40-0.65 1.75-2.25 0.60-0.90 0.03 0.03 0.35 0.35
S5 0.50-0.65 1.75-2.25 0.60-1 0.03 0.03 0.5 0.20-1.35 0.35
S6 0.40-0.50 2-2.50 1.20-1.50 0.03 0.03 1.20-1.50 0.30-0.50 0.20-0.40
S7 0.45-0.55 0.20-1.0 0.20-0.90 0.03 0.03 3-3.5 1.30-1.80 0.20-0.30