hiqsc logo United Kingdom France German Sweden Norway Holland
T: +44 1246 260303
F: +44 1246 260245
enquiry@hiqsc.com

Content on this page requires a newer version of Adobe Flash Player.

Get Adobe Flash player

 

 

 

Steel Specifications

H.I Quality Steel Castings can supply steel to a full range of specifications. We are pleased to offer expert advice on steel chemistry and achievable mechanical properties taking account of service environment, weldability and casting geometry and section size. Close analytical control of steel chemistry is followed by heat treatment with facilities for solution treatment, annealing, normalising and hardening and tempering.

The range of steels catered for is as follows:

Plain carbon and carbon manganese steels for general engineering purposes, variants for low temperature applications and steels requiring good weldability.
Typical Specifications: BS3100, A1:A2:A3:A4:A5:A6, ASTM A27, A216WCB, WCC, A148 70-40 and 80-50, ASTM A352 LCA, LCB, LCC, DIN/EN GS52, GS20 Mn5, GS24Mn6V
 
C
Si
Mn
S
P
Cr
Ni
Mo
Other
Typical
0.25
0.35
1.5
0.02
0.025
Residual
-
Mechanical properties / Heat treatment: Normalised or quenched and tempered.
 
Yield
MPa

UTS
MPa

Charpy impacts
J@20°C
Comments: Higher carbon contents will give more strength but lower toughness. Lower carbon quenced and tempered versions will give good combination of strength and toughness. Strengths and low temperature toughness in Q&T steels can be improved with alloying additions. Low carbon NiMo grades for offshore applications offer good weldability and Charpys at -40°C
Typical
300
520
27
Weldability: C <0.25% for good weldability, Higher C contents weldable with care and good control of preheat and PWHT.

Wear Resistant and surface hardening grades
Typical Specifications: BS3100 AW2, AW3 (1Cr BW2 to 4)
 
C
Si
Mn
S
P
Cr
Ni
Mo
Other
Typical
0.5
0.45
1
0.02
0.03
-
-
-
-
BW10
1
0.45
12.5
0.05
0.05
-
-
-
-
Comments: Steels suitable to surface hardening through heat treatment. Similar 1% chromium bearing steels are also available giving higher hardness and better depth of hardness for low shock high wear applications. Low carbon AW1, AW2 type steels are available for surface hardening by carburising. Manganese work hardening steels (BW10) are employed in conditions of severe wear combined with impact.

Chromium Molbdenum and Chromium Molybdenum Vanadium steels for use at high temperatures.
Typical Specifications: BS3100 B1 to B7, ASTM A217 WC1:WC6:WC9:C5:C12. DIN/EN GS17CrMo5-5, GS17CrMo9-10
 
C
Si
Mn
S
P
Cr
Ni
Mo
Other
Typical
0.17
0.35
0.75
0.02
0.025
2.25
0.40
1.00
-
Mechanical properties / Heat treatment: Normalised and tempered or oil quenched and tempered.
 
Yield
MPa

UTS
MPa

Charpy impacts
J@20°C
Comments: 1CrMo and 1/2 CrMo steels are alloyed with vanadium to promote stable precipitates giving good creep resistance at higher temperatures (450°C to 550°C). For higher temperatures higher Cr (3 Cr 5Cr, 9Cr) variants are preferred or more complex Nb, W, Cu, Co bearing grades.
Typical
275
450
25
Weldability: Weld with matching consumable under strict parameter control.

Higher Strength Steels
Typical Specifications: BS3100 BT1:BT2:BT3, ASTM A148 Gr90-60:115-95 EN:GS25CrMo4
 
C
Si
Mn
S
P
Cr
Ni
Mo
Other
Typical
0.28
0.35
0.75
0.02
0.025
1
0.50
0.25
-
Mechanical properties / Heat treatment: Normalised, quenched and tempered.
 
Yield
MPa

UTS
MPa

Charpy impacts
J@20°C
Comments: Good general purpose higher strength steels. Specifications for these steels have an "open analysis" and consideration has to be given to the engineering application when determining correct chemistry.
Typical
580
850
25
Weldability: Weld only with strict control of preheat parameters and PWHT.

Nickel Chromium Molybdenum steels with good combination of strength and toughness. Higher hardenability materials for larger castings. Materials suitable for pressure containing parts and Marine applications.
Typical Specifications: BS3100 BT2, ASTM A487Gr4 and 10 DIN/EN GS25NiCrMo8-5-4. DNV R4
 
C
Si
Mn
S
P
Cr
Ni
Mo
Other
Typical
0.15/0.25
0.35
0.85
0.01
0.020
1/1.5
2.50/3.75
0.35
-
Mechanical properties / Heat treatment: Normalised or quenched and tempered.
 
Yield
MPa

UTS
MPa

Charpy impacts
J@-20°C
Comments: Higher alloy contents improve both hardness and hardenability. These steels develop high strength and have excellent toughness at low temperatures
Typical
550
860
50
Weldability: Good with careful parameter control

13 Chromium and Chromium Nickel Molybdenum steels for use in mildly corrosive environments.
Typical Specifications: BS3100 410C21, 420C29, 425C11, ASTM A743: CA15, CA6NM, DIN/EN:GX4CrNi13-4
 
C
Si
Mn
S
P
Cr
Ni
Mo
Other
Typical
0.04
0.35
0.6
0.02
0.025
13
4.00
0.35
-
Mechanical properties / Heat treatment: Normalised and tempered or oil quenched and tempered.
 
Yield
MPa

UTS
MPa

Charpy impacts
J@0°C
Comments: Ferritic mildly corrosive resistant steel with wide ranging applications. The 0.15%C, 13%CR, 1%Mo version has lower strength, toughness and poorer weldability.
Typical
550
755
35J
Weldability: Good

Stainless steels for use in corrosive environments.
Typical Specifications: Type 304 and 316 and Duplex steels. ASTM A743 CF8/CF8M, ASTM A890 grades
 
C
Si
Mn
S
P
Cr
Ni
Mo
Other
Typical
0.06
0.75
1.7
0.04
0.040
18
8.00
0.35
-
Typical
0.06
0.75
1.7
0.04
0.040
19
9.00
2.50
Typical
0.03
0.75
0.7
0.04
0.040
25
5.00
2.00
Cu, N
Mechanical properties / Heat treatment: Solution treat and quenched. Particulars depend on composition
 
Yield
MPa

UTS
MPa

Charpy impacts
J@20°C
Comments: A wide range of alloy compositions exist to suit particular service environments and engineering requirements. Duplex steels offer a combination of corrosion resistance and higher strength levels. Predominantly austenitic steels are required for severe service environments.
Typical
205
485
-
Weldability: Generally good when microstructures contain small amounts of ferrite.

Chromium Nickel and Nickel Chromium steels for high temperature service.
Typical Specifications: BS3100 302C35 to 330C12, ASTM A297 HF:HK:HP types.
 
C
Si
Mn
S
P
Cr
Ni
Mo
Other
Typical
0.3
1.5
1.5
0.04
0.04
20
10
-
-
Typical
0.35
1.5
1.5
0.04
0.040
26
20.00
-
-
Typical
0.4
2
1
0.03
0.030
25
35.00
-
Nb
Mechanical properties / Heat treatment: As cast or as agreed on case by case basis.
 
Yield
MPa

UTS
MPa

Stress rupture and limiting creep stress criteria apply
Comments: Alloy choice is influenced by operating conditions particularly service temperature and thermal cycling. All these alloys have documented long time stress to rupture and limiting creep stress data, over operational temperature ranges.
Typical
220
450
Weldability: Difficult to weld. Careful choice of consumable and specific welding controls are called for.

 
Home Casting Development Facilities Process Control Typical Applications Steel Specifications Contact Us

    Production Quality Control     Personnel
    Melting Certificates     Location
    Moulding Environmental     Enquiry Form
    Heat Treatments NDT      
    Additional Services Policies      
 


cert logos
 
Registered in England - Reg No. 1420683
This website and its content is copyright of H.I. Quality Steel Castings Limited - © H.I. Quality Steel Castings 2009-2013
All rights reserved. All logos are copyright their respective owners. Legal notices